During World War 1 and World War 2, first class football was suspended. With players away on active duty, clubs were allowed to use players from other teams as "guests".

This letter from Arsenal manager George Allison is a reply to Newcastle United's George Bradley who had offered his services. George played five times for the Gunners during the 1944-45 season.

1944-08-18 Letter from George Allison to George Bradley