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Stamps of
United States
,
William T. Piper
issue
List
|
Catalog
|
Gallery
|
All issuers
|| Edit
1 to 1 of 1
airmail
1991
, May 17
William T. Piper issue
unwmk
p.
11
-
40c
multi
William T. Piper
&
Piper Cub
1 to 1 of 1