Clarify museum roster and Dan Gross research sources
Add audited Dan Gross timeline enrichment
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== Biography ==
== Biography ==
 
On 17 April 1938, Married Lore Rollig (who secretly converted to Judaism). On 20 May 1943, Became naturalized citizen (Certificate No. On 17 August 1943, he served as instructor, Section V. In 1950, he attended PhD in Clinical Psychology, Columbia University. In 1954, he 5 President, Society of Correctional Psychologists. In 1958, Retired from Army as Lt. College, University of Vienna (Psychology & Law, PhD, LLD). He (handwriting expert and personnel consultant). Returned to Vienna to locate and rescue wife. William R. Perl (September 21, 1906 – December 24, 1998) was a Prague-born American lawyer and psychologist who was the chief interrogator during the Malmedy massacre trial. William R. Perl was born to a textile merchant in Prague on September 21, 1906, in what was then the Austro-Hungarian Empire. He spent much of his youth and early adulthood in Vienna. Perl attended the University of Vienna, where he earned a Ph.D. in law and a master's degree in international business. He joined Ivria, one of several Jewish fraternities, as a student and soon became deeply immersed in the growing Zionist movement. Perl established a successful law firm in Vienna after graduating and practiced law there until the Nazi take-over in 1938. Perl was a chief interrogator during the Malmedy massacre trial, where Col. Joachim Peiper and other members of the Waffen-SS were prosecuted for the murder of American prisoners of war at Malmedy, Belgium in December 1944. Together with Raphael Shumacker, Robert E. Byrne, Morris Ellowitz, Harry Thon and Joseph Kirschbaum, Perl was criticized for alleged torture at the interrogations. The Perls settled in the United States with their two sons, Raphael and Solomon. Perl continued his study of psychology at Columbia University and then served as an army psychologist until his retirement with the rank of Lt. Colonel in 1966. Perl remained active in Jewish affairs until his death, despite suffering from Parkinson's disease. He died at his home on December 24, 1998.
 
William R. Perl (September 21, 1906 – December 24, 1998) was a Prague-born American lawyer and psychologist who was the chief interrogator during the Malmedy massacre trial.
 
William R. Perl was born to a textile merchant in Prague on September 21, 1906, in what was then the Austro-Hungarian Empire. He spent much of his youth and early adulthood in Vienna. Perl attended the University of Vienna, where he earned a Ph.D. in law and a master's degree in international business. He joined Ivria, one of several Jewish fraternities, as a student and soon became deeply immersed in the growing Zionist movement. Perl established a successful law firm in Vienna after graduating and practiced law there until the Nazi take-over in 1938.
 
Perl was a chief interrogator during the Malmedy massacre trial, where Col. Joachim Peiper and other members of the Waffen-SS were prosecuted for the murder of American prisoners of war at Malmedy, Belgium in December 1944. Together with Raphael Shumacker, Robert E. Byrne, Morris Ellowitz, Harry Thon and Joseph Kirschbaum, Perl was criticized for alleged torture at the interrogations.
 
The Perls settled in the United States with their two sons, Raphael and Solomon. Perl continued his study of psychology at Columbia University and then served as an army psychologist until his retirement with the rank of Lt. Colonel in 1966.
 
Perl remained active in Jewish affairs until his death, despite suffering from Parkinson's disease. He died at his home on December 24, 1998.
 


== Research notes ==
== Research notes ==
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== Timeline ==
<div class="mw-collapsible mw-collapsed soldier-timeline">
<div class="soldier-timeline-body">
* 17 April 1938 — Married Lore Rollig (who secretly converted to Judaism).
* 20 May 1943 — Became naturalized citizen (Certificate No.
* ?/1944 Transferred to forward intelligence unit (IPW Team 177) on the.
* ?/1945 Assigned to War Crimes Branch as interrogator.
* 6.
* Prague, son of Rudolf and Camilla.
* Promoted to Staff Sergeant (T/3) and assigned to DEML Section.
* Returned to Vienna to locate and rescue wife.
</div>
</div><div style="clear: both;"></div>


== Sources ==
== Sources ==
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* NARA World War II Army enlistment records (where a NARA ASN is present)
* NARA World War II Army enlistment records (where a NARA ASN is present)
* 1940 U.S. Census (where a census match is present)
* 1940 U.S. Census (where a census match is present)
* Dan Gross, ''Timeline of William R. Perl for Camp Ritchie'' (private research document; 1 source documents reviewed)
* Dan Gross, ''Timeline of Perl, William R. for Camp Ritchie'' (private research files; selected non-private narrative findings; 1 source files: WILLIAM R. PERL - TIME LINE.doc)