P.F. Collier and Agatha

Hello All,
I have a copy of "And Then There Were None" published by P.F. Collier & Son copyright date 1940. It has a maroon/purple pebbled cover. The only one I can see is one on ABE. I can't find any other information about it. Can anyone tell me where to look? I would like to know what part of publishing history e.g. before this or after then, reprint?,how many, part of a set etc.
Thanks for any help.
Hockley
I have a copy of "And Then There Were None" published by P.F. Collier & Son copyright date 1940. It has a maroon/purple pebbled cover. The only one I can see is one on ABE. I can't find any other information about it. Can anyone tell me where to look? I would like to know what part of publishing history e.g. before this or after then, reprint?,how many, part of a set etc.
Thanks for any help.
Hockley