BUTLER, Ellis Parker (1869-1937). Philo Gubb, Correspondence-School Detective. Boston: Houghton Mifflin, 1918. 8o. Original cloth (upper edges of lower cover slightly bumped); dust jacket (some chipping to panels affecting lettering on spine and edges, upper panel with long closed tear). -- Another copy. Original cloth (minor staining to covers). Both FIRST EDITIONS. Queen's Quorum 61. (2)