About Usher Caplan Usher Caplan is an editor at the National Gallery of Canada. Books by Usher Caplan Selected Poems Collected Works of A.M. Klein by (author) A.M. Klein edited by Seymour Mayne, Zailig Pollock & Usher Caplan A. M. Klein An Annotated Bibliography by (author) Zailig Pollock, Usher Caplan & Linda Rozmovits Literary Essays and Reviews Collected Works of A.M. Klein by (author) A.M. Klein edited by Usher Caplan & M.W. Steinberg Beyond Sambation Selected Essays and Editorials 1928-1955 (Collected Works of A.M. Klein) by (author) A.M. Klein edited by Usher Caplan & M.W. Steinberg