American Jewish Archives: 106, 251, 400, 401, 406, 413, 414, 415, 416, 492, 536
American Jewish Historical Society: 18, 644
Courtesy the author: 50, 443, 535, 540
Brandeis University: 5, 9, 11, 13, 55, 78, 109, 110, 127, 128, 129, 137, 164,172, 355, 357, 510, 514, 531, 660, 665, 666, 733, 751
Brandeis Law School: 26 Bryn Mawr Library: 214
California Historical Society: 635
Filson Historical Society: 9
Hadassah Archives: 417, 424
Harvard Law School Library: 28, 49, 80, 475 (Brandeis Papers), 560 (Chafee Papers), 693, 744 (Brandeis Papers)
Library of Congress: 39, 97, 136, 156, 169, 185, 215, 231, 233, 245, 247, 257, 259, 263, 278, 324, 329, 338, 341, 374, 431, 463, 496, 511, 516, 554, 593, 621, 654, 673, 692, 713, 719, 731
Richard Pelenberg: 553
Todd C Peppers: 465, 610
Elizabeth Rauschenbush: 664, 667, 726
Roosevelt Library: 714
Charles Tachau: 37
Tamiment Institute: 248 U.S.