The modern chess problems /
by Philip H. Williams, F.C.A. Issued under the supervision of the British chess company.
Williams, P. Hamilton., British Chess Company. (1912). The modern chess problems. 2d ed., rev., with a new preface. Philadelphia: D. McKay.
Williams, Philip Hamilton, 1873-1922, and British Chess Company. The Modern Chess Problems. 2d ed., rev., with a new preface. Philadelphia: D. McKay, 1912.
Warning: These citations may not always be complete (especially for serials).