by John A. Tracy ... [et al.] by John E. Cribbet ... [et al.] by John Berry...[et al.] John P. McKay ... [et al.]. by P.D. Eastman ... [et al.] by Robert Franek ... [et al.] John Halliday ... [et al.] John Murphy ... [et al.] by Colin Barrow ... [et al.] by Guy N. Smith ... [et al.]