I have this nice UK paperback edition of Orbit 2, where the Wilhelm made its first appearance:
https://images-na.ssl-images-amazon.com/images/I/413FfkCenfL.SX316.SY316.jpg
I only have a battered copy of the UK Orbit 1 paperback, but I love the cover:
https://pictures.abebooks.com/ELLEPOTTER/md/md20882515571.jpg
― Ward Fowler, Monday, 18 June 2018 11:02 (five years ago) link