1) John Cassidy (b. 1953) wrote Juggling for the Complete Klutz.
2) John R. Cassidy, b. 8/4/1922 authored A Station in the Delta.
3) John Cassidy, b. 1963-01-31 authored Dot.con.
4) John Cassidy, b. 1928, poet - Night Cries
5) Joy (Wilt) Berry, b. 1944 - A children's book about being destructive (no John Cassidy that I can see)
6) John B. Cassidy; b. 12/5/49 - A Guide to Three Rivers
7) John Cassidy - Josephine Meckseper