ASSASSINATION OF DR. MARTIN LUTHER KING, JR ., CIVIL RIGHTS When the conversation broke up, Gault left Gulas' Restaurant and Prosch and Liberto stayed on and continued drinking, They made no comment whatever regarding their conversation with Gus and Public sources that came to know from the new presents and public relations, and the source saw Gault on two occasions was James Earl Ray, and that the source Saw Gault in two occasions only in Birmingham. Approximately one week later the source again ob- served a meeting between Dr. Prosch & Frank Liberto on the the one thing between them was the same location on the other. The meeting took place at the same locations on the parking lot of Gus's Restaurant and these four men sat in the same car for a period probably in excess of one hour. the black restaurant but said nothing regarding the following. to the restaurant but sold nothing regarding The restaurant. A few nights later, again at Gus' Restaurant, probably very late in March, 1968. Liberto was at Gus's Restaurant when Dr. Prosch brought Gault to the restaurant for the second time. These three three private conversations by Prosch or Liberto regarding this conversation. believes this was the last occasion that the saw Frank Libertto in Birmingham, Alabama. On April 3, 1968, the source Net Dr.Prosch had been at the bar in Gus's at about 4:15 PM. Proscho had then drinking quite a white top. Proscha drove him around took the source for a ride on a new car a red Cadillac convertible- table with a white Top. Proschal drove him Around some and Presch went into Aeromarine leaving the source in the airport. After ten minutes, he came out with a wooden crate approx- mately four feet by ten inches on eight inches, and put it in the trunk and car on the lot. Restaurants and parked car are also back to Gus' When they got out of the car, Prosch took the source to the rear of his car and told him he wanted to show him something. He opened the trunkand pried the top off the wooden box which contained a rifle. He talked about the rifle 3

Summary  
The document contains two distinct records. The first details accounts of meetings involving Gus Joseph Prosch, Jr., Frank Liberto, and James Earl Ray in Birmingham, Alabama, around March 1968. Prosch allegedly discussed plans to assassinate Dr. Martin Luther King Jr., claiming he had purchased a bolt-action rifle from Aeromarine for this purpose. The rifle was described as short-barreled with no scope. Prosch also mentioned that Liberto had acquired another gun in Detroit, and Gault served as a "decoy" to divert suspicion. A source claimed Ray visited Memphis on April 4, 1968, where King stayed, and noted the bullet from the assassination was not linked to the rifle found at Prosch’s location. The FBI later investigated Prosch for federal gun violations in 1970, finding illegal weapons at his residence and office but no direct connection to subversive groups like the Minutemen. Prosch’s background includes medical practice, alleged ties to radical organizations, and ownership of an airplane used for transporting firearms.  

The second document details FBI records related to Alfred William Martinez’s incarceration and interactions in Salt Lake County, Utah, during 1966–1968. Martinez was incarcerated at Salt Lake County Jail with William Simmons, who had a prior arrest record for auto theft dating back to 1933. Martinez’s arrests included charges of public intoxication (June 28, 1967) and an unspecified offense (June 5, 1967). He was sentenced to 27 days in jail or $135 fine on June 29, 1967, and later received a 60-day jail sentence followed by probation in February 1968. Martinez’s FBI file includes his birthplace (Canon City, Colorado), physical description (five feet nine inches tall, 135 pounds, black hair, brown eyes), and occupation as a laborer. A Social Security Account Number is noted but redacted. The document also references an FBI teletype from December 2, 1976, involving the Memphis field office and two copies of an LFM (likely a law enforcement form) titled "MARTIN LUTHER KING, JR."  

Key People  
- **Gus Joseph Prosch, Jr.**: Alleged to have purchased a rifle for assassinating MLK, involved in meetings with Liberto and Gault.  
- **Frank Liberto**: Partner in planning the assassination, allegedly acquired another gun in Detroit.  
- **James Earl Ray**: Suspected of involvement in MLK’s assassination; linked to Memphis on April 4, 1968.  
- **Gault**: Designated as a "decoy" to divert attention from the actual assassin.  
- **Alfred William Martinez (FBI number 8930G1)**: Incarcerated in Salt Lake County Jail, Utah, during 1966–1968; arrested for public intoxication and unspecified charges.  
- **William Simmons**: Inmate at Salt Lake County Jail with Martinez; prior arrest record for auto theft from 1933.  
- **Lieutenant Gary Deland**: Salt Lake County Sheriff’s Office Jail Commander.  
- **Deputy Burke Wells**: Salt Lake County Sheriff’s Office, provided records on November 29, 1976.  

Key Locations  
- **Gus’s Restaurant (Birmingham, Alabama)**: Site of multiple meetings between Prosch, Liberto, and Gault.  
- **Aeromarine (Birmingham, Alabama)**: Where Prosch allegedly purchased the rifle.  
- **Memphis, Tennessee**: Location where MLK was staying on April 4, 1968; Ray’s alleged visit noted.  
- **Salt Lake County Jail, Utah**: Site of Martinez’s incarceration with William Simmons.  
- **Canon City, Colorado**: Martinez’s birthplace.  
- **Sacramento Office of the FBI**: Mentioned in context of Martinez’s file.  
- **Memphis Field Office, FBI**: Referenced in teletype correspondence.  

Key Events  
- **March 1968 Meetings**: Prosch and Liberto discussed assassination plans at Gus’s Restaurant, with Gault present.  
- **April 3, 1968**: Prosch showed a rifle to a source, claiming it would be used to kill MLK.  
- **April 4, 1968**: Source claimed Ray visited Memphis, where MLK was staying.  
- **December 1970 FBI Investigation**: Prosch arrested for gun violations; illegal weapons found at his residence and office.  
- **Martinez’s Incarceration (1966–1968)**: Martinez incarcerated with William Simmons at Salt Lake County Jail.  
- **June 29, 1967**: Martinez sentenced to 27 days in jail or $135 fine for public intoxication.  
- **February 1968**: Martinez received a 60-day jail sentence followed by probation.  
- **December 2, 1976 FBI Teletype**: Involving Memphis field office and LFM documents related to MLK.  

Key Organizations  
- **Minutemen**: No direct link established between Prosch and this group, though he was investigated for potential ties.  
- **Black Panthers**: Mentioned in context of Prosch’s alleged radical associations.  
- **Federal Bureau of Investigation (FBI)**: Conducted investigations into Prosch’s activities and connections to subversive groups; maintained records on Martinez.  
- **Salt Lake County Sheriff’s Office**: Managed Martinez’s incarceration and provided records.  
- **Sacramento Field Office, FBI**: Part of Martinez’s file.  
- **Memphis Field Office, FBI**: Referenced in teletype correspondence related to MLK.

MLK Declassified Files

44-hq-38861_hs1-233652821_29-06-part_4_of_4.pdf

Document Summary

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