Billie Bradley and Her Classmates; Or, The Secret of the Locked Tower

Sayers, Dorothy L. (Dorothy Leigh), 1893-1957

M'Govan, James, 1845-1919

Wells, Carolyn, 1862-1942

Ray, Anna Chapin, 1865-1945

Wright, Rowland, 1862-1942

Relyea, C. M. (Charles M.), 1863-1932 [Illustrator]; Barbour, Ralph Henry, 1870-1944

Smith, Wallace, 1888-1937 [Illustrator]; Hecht, Ben, 1894-1964

Fletcher, J. S. (Joseph Smith), 1863-1935

Crofts, Freeman Wills, 1879-1957

Adams, O. S.

Christie, Agatha, 1890-1976