Annals of an era Percy MacKaye and the MacKaye family, 1826 - 1932; a record of biography and history, in commentaries and bibliography - Grover, Edwin Osgood (Pioneer Press, 1932)
"In the present edition, on rag paper, with 45 illustrations, limited to 110 copies, the three autograph signatures (below) represent three MacKaye generations of dramatists in direct descent. This copy is number 11. [signed] Steele MacKaye. Percy MacKaye. Keith MacKaye.". - Signature of Steele MacKaye on mounted paper strip. - Illustrations issued also separately: Issued also on ordinary paper without plates