There are 1 book by William J. O'Callaghan on BookOrb. A strong starting point is How I flew the forties (1991). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has William J. O'Callaghan written?
BookOrb lists 1 book by William J. O'Callaghan.
Where should I start with William J. O'Callaghan?
A good starting point is How I flew the forties (1991).
What is the William J. O'Callaghan books in order list?
In publication order: 1. How I flew the forties (1991).