Concise entry with links.

John G. Slater's scholarly introduction to this collection, published in 2000.

Partial bibliography, links, and full text of his 1911 paper outlining "conational psychology."

Brief article on the philosopher's connection to this movement, especially Chaim Weizmann.

Archive housed at the John Rylands Library at Manchester University. Brief profile of the thinker and general information on the documents.