Organization Caxton Club

American Studies Association

Mississippi Valley Historical Association

Conference on Western History

American Historical Association

Economic History Association

Agricultural History Association

Wayfarers Club

Westerners

Tavern Club

UCLA Library

William Andrews Clark Memorial Library

University of California, Los Angeles

Zamorano Club

Rounce & Coffin Club

University of Arizona

California Library Association (president 1949-50)

Bibliographical Society of America (president 1954-55)

American Library Association (honorary member 1981)

Roxburghe Club

Grolier Society

Shriners Childrens Hospital

Salvation Army

University of Illinois, Urbana-Champaign

Newberry Library

Library of Congress

University of Michigan

Rare Book School

Music Library Association

American Library Association

American Antiquarian Society

American Printing History Association

Bibliographical Society

Bibliographical Society of America

Sonneck Society

Society for American Music

Grolier Club

Roxburghe Club of San Francisco

Colophon Club

Association Internationale de Bibliophilie

Grolier Club

Book Club of California

Antiquarian Booksellers Association of America

International League of Antiquarian Booksellers

Provincial Booksellers Fairs Association

Independent Online Booksellers Association

Fine Press Book Association (founder member)

Antiquarian Booksellers Association of America (member)

Grolier Club (member)

Four Rivers Books Ltd (owner)

Religion and Ethics Institute (assistant director | 1978-1981 | committee member)

Northwestern University (dept. of the history and literature of religions | visiting lecturer in Christianity | 1979-1981)

Newberry Library (administrator | 1981-1987 | custodian and curator | 1987-2016 | emeritus curator | 2016)

American Printing History Association (committee member)

Archivio italiano per la storia della pietà (committee member)

La Bibliofilía (committee member)

Bibliotheca Wittockiana (committee member)

Colorado College Press (committee member)

Hamilton Wood Type and Printing Museum (committee member)