WW1 plain cover with the enclosed folded letter June 11th 1918 from Portland Ore, addressed to:

Fred Caveader 

1st Detachment

Kelly Field June - Automatic Rep

American Expeditionary Forces 

Franked 3c cancelled PORTLAND OREGON JUN 12 1918 slogan. 

Cover is redirected to 463 Aerop Sqdn (other redirection notes) with cachet NOT AT FIRST AIR DEPOT JUL 18 1918. 

Condition as shown - scarce cover and letter from WW1 some edge faults 

ID US 21071