Mr Caldwell was a very popular author once upon a time. His Trouble in July, for example, remains in print - at a university press no less.
Here are four versions in paperback including the Collins's, which was reprinted in 1949, 1951 and 1952.
Penguin 567 - October 1945
Penguin 567 back
Penguin 567 third printing - May 1947
Penguin 567 third printing back
Pan G269 - 1959
Pan G269 back
White Circle 335- 1948
White Circle 335 back