- found: His Easy methods of constructing the various types of magic squares and magic cubes with symmetric designs founded thereon, 1909: t.p. (John Willis)
- notfound: Auth. & writ. ww, 1972;Writ. dir., 1974-76;DAB;NUC;Dal. Univ. Gen. cal., 1968/69.
- 1977-08-24: new
- 2009-11-13: revised