Pierre Frank was a French Trotskyist leader. He served on the secretariat of the Fourth International from 1948 to 1979. Educated as a chemical engineer, Frank was one of the first French Trotskyists, working with surrealist Pierre Naville and the syndicalist Alfred Rosmer. In 1930, he joined Trotsky on the island of Prinkipo to work as a member of the secretariat that prepared the first conference of the International Left Opposition. Wikipedia
Introduction and link list to a number of bio-bibliographical sketches and miscellanies of Trotskyists provided as PDF files www.trotskyana.net/Trotskyists/Bio-Bibliographies/bio-bib...
The definitive Wikipedia entry for Pierre Frank. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Pierre_Frank