Dear Mr. Schneider,
Thank you for posting your request to the History Hub!
We searched the Records of U.S. Army Operational, Tactical, and Support Organizations (World War II and Thereafter) (Record Group 338) and the Records of the Adjutant General's Office, 1917- (Record Group 407) but were unable to locate records of the 434th Military Government Company for 1952-1956.
We hope this information is helpful. Best of luck with your research!