Bainton, Roland H.
[Contributor];
Becker, Carl Lotus
[Contributor];
Crabtree, James William
[Contributor];
Dennis, Alfred Pearce
[Contributor];
Dyer, Walter A.
[Contributor];
D’Indy, Vincent
[Contributor];
Edman, Irwin
[Contributor];
Hoffman, Malvina
[Contributor];
Keller, Helen
[Contributor];
Lowell, James Russell
[Contributor];
Mill, John Stuart
[Contributor];
Miller, Dickinson S.
[Contributor];
Morley, Christopher
[Contributor];
Nearing, Scott
[Contributor];
Newcomb, Ethel
[Contributor];
Peterson, Houston
[Editor];
Read, Helen Appleton
[Contributor];
Sachs, Hanns
[Contributor];
Shaler, Nathaniel Southgate
[Contributor];
Sherman, Stuart P.
[Contributor];
Spring, Leverett Wilson
[Contributor];
Sullivan, Louis Henri
[Contributor];
Wells, H. G.
[Contributor]