The Editor desires especially to acknowledge assistance in granting the use of original material, and for helpful advice and suggestion, to Professor Brander Matthews of Columbia University, to Mrs. Anna Katherine Green Rohlfs, to Cleveland Moffett, to Arthur Reeve, creator of "Craig Kennedy," to Wilbur Daniel Steele, to Ralph Adams Cram, to Chester Bailey Fernald, to Brian Brown, to Mrs. Lillian M. Robins of the publisher's office, and to Charles E. Farrington of the Brooklyn Public Library.