While everyone is celebrating the long-overdue restitution to Thailand of the two stolen Khmer lintels, ARCA thought a bit of context might add some additional points to ponder when taking in the carefully-worded, announcements of cultural diplomacy and restitution.

Black and white photo documentation from a site survey by Manit Wallipodom conducted sometime between 1960 and 1961 shows that a lintel, dating from 1000-1080 CE depicting Yama, the deity of the underworld, remains in situ at Prasat Nong Hong, a Khmer sanctuary in Buriram Province, Thailand which dates to the 16th Buddhist century, and is comprised of three brick pagodas built on the same laterite base and surrounded by a laterite wall with a moat.

1961

Date Unknown, possibly on/around 2508 Thai (1965) 
The architectural lintel depicting Yama, the deity of the underworld, spanning a doorway at Prasat Nong Hong in Buriram Province is looted.

Date Unknown
The architectural lintel depicting Yama, the deity of the underworld, which once spanned a doorway at Prasat Nong Hong in Buriram Province is illegally exported out of Thailand without the benefit of an export license.

1966
The lintel depicting Yama, the deity of the underworld, from Prasat Nong Hong in Buriram Province is purchased by Avery Brundage in London, UK.  In the Verified Complaint for Civil Forfeiture In Rem, filed in the US Courts in the Northern District of California - San Francisco Division, the name of this auction house/gallery is not revealed and is cited simply as "Gallery 1."

Subsequent to its purchase in the UK, the architectural lintel depicting Yama, the deity of the underworld from Prasat Nong Hong in Buriram Province is imported into the United States in violation of Thai law, and as such constitutes stolen, smuggled, and/or clandestinely imported or introduced merchandise pursuant to Title 19, United States Code, Section 1595a(c)(1)(A).

Later in 1966
After its import, the lintel depicting Yama, the deity of the underworld from Prasat Nong Hong also joins the promised collection to be gifted by Avery Brundage to the future Asian Art Museum of San Francisco.

"With respect to the lintel depicting Yama, the deity of the underworld from Prasat Nong Hong, the Asian Art Museum of San Francisco had several letters documenting exchanges between Brundage and representatives of "Gallery 1" concerning the purchase of art.  Among other things, one of the representatives of "Gallery 1" and Brundage exchanged letters concerning the potential that at least one lintel that Brundage had purchased had been stolen from Thailand and that another artefact had been taken out of Thailand illegally. 

These records also included archaeological surveys from Thailand, indicating that the lintel depicting Yama, the deity of the underworld had been removed from Prasat Nong Hong temple. These communications concretise that the museum's donor was at least peripherally aware that at least a portion of his collection had been illegally exported from Thailand and that the museum itself had records that concretised the suspect nature of the artefact. 

Photo documentation from a survey done by M. C. Subhadradis Diskul shows that a lintel, depicting a deity or devata sitting over a Kala face that is disgorging garland, dating from 975-1025 CE, remains in situ at Prasat Khao Lon, a brick temple in Khmer architectural style, built approximately in the early 11th century, located in Charoensuk Village, Taprach sub-district, Tapraya district, Sakaeo province.

The architectural lintel depicting a deity or devata sitting over a Kala face that is disgorging garland spanning a doorway at Prasat Khao Lon in Sakaeo province is looted.

Date Unknown
The architectural lintel depicting a deity or devata sitting over a Kala face that is disgorging garland, which once spanned a doorway at Prasat Khao Lon in Sakaeo province, is illegally exported out of Thailand without the benefit of an export license.

Once registered, the new museum is initially opened as a wing of the  M. H. de Young Memorial Museum in Golden Gate Park.

1968
The lintel depicting a deity or devata sitting over a Kala face that is disgorging garland is purchased by the Asian Art Museum from a Paris gallery with the advice of Avery Brundage.

Subsequent to its purchase the architectural lintel depicting a deity or devata sitting over a Kala face that is disgorging garland is imported into the United States in violation of Thai Law, and constitutes stolen, smuggled, and/or clandestinely imported or introduced merchandise pursuant to Title 19, United States Code, Section 1595a(c)(1)(A).

1968
The lintel depicting a deity or devata sitting over a Kala face that is disgorging garland is accessioned into the collection of the Asian Art Museum of San Francisco. 

According to the Verified Complaint for Civil Forfeiture In Rem, filed in the Northern District of California - San Francisco Division, letters between Avery Brundage and representatives of an again unnamed gallery, cited simply as "Gallery 2" concerning the lintel depicting a deity or devata sitting over a Kala face that is disgorging garland indicate that a Thai lintel in Brundage's possession has been reported as stolen by the Thai government and the Thai government had asked Avery Brundage to return said lintel. Avery Brundage subsequently seeks the advice of a representative of "Gallery 2" regarding the situation. 

The records included a copy of an article published in the Bangkok Post which describes the lintel depicting a deity or devata sitting over a Kala face that is disgorging garland as being present in the United States and indicated that, according to the leader of a Thai archaeological conservation group, Thai officials want to recover the lintel as it had been improperly looted from Thailand. 

The Center for Asian Art and Culture is rebranded as the Asian Art Museum of San Francisco. 

Avery Brundage dies. 

3 March 1977
According to the Royal Gazette no 52, The Fine Art Department announces that Prasat Nong Hong has been listed as a national historic site.

16 July 1989
According to the Royal Gazette no 106, chapter 112, The Fine Art Department announced that Prasat Khao Lon has also been listed as a national historic site.

Renovations orchestrated by Italian architect Gae Aulenti are complete on the former San Francisco library and the Asian Art Museum of San Francisco moves into its newly designed 163,000 square-foot museum space located at Civic Center Plaza.  It is now the largest institution of exclusively Asian arts in the United States.

Activists with the Asians Art Museum's Samurai Blog create edible tortilla art which features a graphic representation of Avery Brundage as a severed Buddha head.  They distribute these food treats to museum-goers at the Asian Art Museum of San Francisco along with a highly critical flyer about the founding donor's collecting ethics surrounding his acquisitions and his subsequent donations to the museum. 

At this point, the San Francisco museum's administration should have no doubt, that not just art historians, but members of the local Asian community in San Francisco have begun to have concerns regarding the acquisition practices of the museum's founding donor as well as the ethical responsibility of the museum to address the city taxpayers' concerns. 

The Facebook Group สำนึก ๓๐๐ องค์ publishes its own concerns regarding Avery Brundage's acquisitions.  Activists post photos of the architectural lintel depicting  Yama, the deity of the underworld from Prasat Nong Hong on their group's Facebook page which is dedicated to identifying looted Thai heritage. The series of photos depict the temple, with the lintel in situ prior to its theft.  The social media post further records that the artefact is on display at the Asian Art Museum in San Francisco.  

NB, This Civil Society Organization will go on to raise awareness and identify a series of suspect Thai sculptures and architectural artefacts in various museums around the globe.

on/around 24 September 2016
The Consul General of the Royal Thai Consulate General in Los Angeles, California visits the Asian Art Museum of San Francisco and observes both looted lintels on prominent display in the museum. 

Subsequently, the Royal Thai Consulate General speaks with the lead curator of the museum and expresses his desire for these two artefacts to be returned to their country of origin. 

The museum, however, made no further communication with the consul general or any Thai official until nudged into action by the formal US federal investigation. 

31 May 2017
The Thai Minister of Culture meets with the Chargé d'affaires at the United States Embassy in Bangkok, Thailand along with a Special Agent from Homeland Security Investigations.  During this meeting, the Thai Minister informs the Chargé that Thai officials had reviewed the evidence regarding the architectural lintel depicting Yama, the deity of the underworld illegally removed from Prasat Nong Hong and the lintel depicting a deity or devata sitting over a Kala face that is disgorging garland, illegally removed from Prasat Khao Lon, both of which are held at the Asian Art Museum of San Francisco.  After their review, the Thai authorities conclude that the artefacts have been illegally exported from the country while both architectural elements were protected under the laws in place in Siam/Thailand since 1935. 

In making their case for the objects' return, the Fine Arts Department of Thailand had commissioned two archaeological surveys outlining the provenance of the lintels. One survey placed the lintel depicting Yama, the deity of the underworld at the Prasat Nong Hong Temple in Non Din Daeng District, Buriram Province, Thailand in place at least until, at least up until 1959. 

Subsequent archaeological photos record the lintel in situ until the survey season of 1960/61. 

The second archaeological survey placed the lintel depicting a deity or devata sitting over a Kala face that is disgorging garland at the Prasat Khao Lon Temple, Ta Phraya District, Sa Kaeo Province where the object was photographed in situ as late as 1967.

13 June 2017
Thailand forms a restitution committee with the established mission of reclaiming Thailand’s plundered historical artefacts from foreign nations. 

2017
The US Government informally brings the issue of the plundered architectural lintel depicting Yama, the deity of the underworld illegally removed from Prasat Nong Hong and the plundered lintel depicting a deity or devata sitting over a Kala face that is disgorging garland to the attention of the Asian Art Museum of San Francisco informing them of the rights of the Thai government as a potential claimant to the artefacts.  Subsequent to this meeting, both artefacts are removed from public view but no statements are forthcoming from the museum's management regarding any decision to voluntary restitute the stolen artefacts.

November 2017
The US Homeland Security Investigation (HSI) sends Thailand photos of 69 ancient artefacts for examination and verification as possibly suspect as having been illegally brought into the US.

According to the Ministry of Foreign Affairs in Thailand,  HSI sent the photos to the Thai Consulate in Los Angeles and requested the Thai authorities to examine and verify if they were from Thailand.

October/November 2018 
Following a one-year investigation by a ministerial committee, assisted by experts from the National Museum in Bangkok, the Kingdom of Thailand’s culture minister announces the Thai government’s demand for the return of 23 antiquities, including the two lintels at the Asian Art Museum in San Francisco, as well as other objects in the Norton Simon Museum in Pasadena, and New York’s Metropolitan Museum of Art all parts of collections since the late 1960s.

January 2020
Another two years go by and the US. attorney's office in the Northern District of California sends the Asian Art Museum of San Francisco a list of national archaeology sites that were appended to Thailand’s 1935 law.   Listed among the sites are the two temples where the two contested lintels in the museum's collection come from.

July 2020
The Asian Art Museum of San Francisco is formally notified that the U.S. attorney’s office is planning civil litigation to ensure the return of the plundered architectural lintel depicting Yama, the deity of the underworld illegally removed from Prasat Nong Hong and the plundered lintel depicting a deity or devata sitting over a Kala face that is disgorging garland from Prasat Khao Lon.

August 2020
The Bangkok Post reports that according to the Thai Department of Fine Arts (DFA), the lintel depicting Yama, the deity of the underworld from Prasat Nong Hong and the lintel, depicting a deity or devata sitting over a Kala face that is disgorging garland from Prasat Khao Lon in the collection of the Asian Art Museum of San Francisco are predicted to be returned to Thailand in March 2021.

24 August 2020
The Thai Public Broadcasting Service  (องค์การกระจายเสียงและแพร่ภาพสาธารณะแห่งประเทศไทย produces a documentary (in Thai) outlining the facts surrounding the stories of the contested lintels removed from Thailand.

The Asian Art Museum of San Francisco releases a statement saying that the museum's board is noted to have begun the deaccession process for the lintel depicting Yama, the deity of the underworld from Prasat Nong Hong and the lintel, depicting a deity or devata sitting over a Kala face that is disgorging garland from Prasat Khao Lon.  Note that this decision only seems to have moved forward four years after attention was drawn to their suspect status.

According to the museum's website: 
"the decision to deaccession these artworks comes after a three-year-long study of information provided and reviewed by the U.S. Department of Homeland Security, Thai officials, the San Francisco City Attorney, and Asian Art Museum experts."

In its press release, the museum further stated:
"The museum’s study found no evidence that these lintels were removed from their sites contrary to the laws of Thailand, but the museum was also unable to locate copies of the export documents that the laws of that time required. With this information in hand, the museum felt it was appropriate to begin the process of deaccessioning the artworks from the collection and to move forward with returning them to the Thai authorities."

8 October 2020
Ahead of the upcoming civil filing, lawyers from the Asian Art Museum of San Francisco sends a letter to the U.S. attorney’s office, indicating the museum's surprise over the government's plan for legal action and that the museum had previously stated that it “would prefer to return the lintels without litigation.”  

26 October 2020
As the wheels of voluntary restitution only get cracking when judicial pressure is truly and justly applied, the US Attorneys in the Northern District of California file a civil complaint seeking the return to Thailand of the lintel depicting Yama, the deity of the underworld from Prasat Nong Hong and the lintel, depicting a deity or devata sitting over a Kala face that is disgorging garland from Prasat Khao Lon in the collection of the Asian Art Museum of San Francisco.

In filing the complaint with the court, under Title 19, United States Code, Section 1595a(c)(1)(A) and Title 28, United States Code, Sections 1345 and 1355 it is believed that the lintels constitute merchandise that has been introduced into the United States contrary to law, as the property was stolen, smuggled, and/or clandestinely imported or introduced into the United States. 

30 October 2020 
Speaking with regards to the formal complaint in an Art Newspaper article, Robert Mintz, deputy director for art and programs at the San Francisco Asian Art Museum,  contends that the process for repatriating both lintels was already underway prior to the civil complaint.  Mintz tells the newspaper that “Deaccessioning requires two votes, separated by six months’ time,” indicating that this was the reason for the museum's apparently sluggish March 2021 date for potential restitution.   

Mintz doesn't seem to recollect that the museum was first informally notified by the US authorities of the problems with these Thai artefacts in 2017, and after having been queried by the Royal Thai Consulate General in 2016. Time enough to have allowed the board to meet a minimum of six times to address the deaccession of these problematic pieces prior to the filing of the US Federal Complaint.

10 February 2021
The United States and the City and County of San Francisco enter into a settlement agreement signed by U.S. District Court Magistrate Donna M. Ryu, in which San Francisco consents to the forfeiture to the United States of the Lintel with Yama, the deity of the underworld, 1000-1080 (Lintel 1) and the Lintel, 975-1025. Northeastern Thailand, Khao Lon Temple, Sa Kaeo province (Lintel 2).

Upon the completion of the San Francisco Asian Art Museum’s deaccessioning process for the Thai lentils in March 2021, their repatriation to Thailand should move forward.

The Thai lintels, according to the agreement, will be returned to Thailand through the U.S. Department of Justice’s victim remission program. Upon their return, the lintels will be placed on exhibition for the religious and cultural appreciation of the people of Thailand.   

The Thai lintels depicting Yama, the deity of the underworld from Prasat Nong Hong and the lintel, depicting a deity or devata sitting over a Kala face that is disgorging garland from Prasat Khao Lon are handed over to Thai authorities in Los Angeles during a formal handover ceremony attend by Mungkorn Pratoomkaew,  Consul-General of Thailand and carried out by Tatum King, Special Agent in Charge of Homeland Security Investigations in San Francisco.