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The Universal Postal Union And International Copyright: A Paper Read Before The Library Association At Oxford, October 3, 1878 (1879) from $29.04	The Universal Postal Union Sheet of Fifty 15 Cent Airmail Stamps Scott C43 from $17.20
Universal Postal Union Centenary Full Sheet of 32 x 10 Cent Stamps Scott 1530-37 from $7.95	The Universal Postal Union and International Copy-Right@@ a Paper from $5.75
The Universal Postal Union And International Copy-right, A Paper from $29.83	1974 UNIVERSAL POSTAL UNION #1537a Plate Block of 16 x 10 cents US Postage Stamps from $3.32
FAMOUS WORKS OF ART ~ UNIVERSAL POSTAL UNION #1537a Block of 8 x 10 cents US Postage Stamps from $0.99	The Universal Postal Union and International Copyright: A Paper Read Before the Library Association at Oxford, October 3d, 1878 from $12.95
Treaty Concerning the Formation of a General Postal Union: Signed at Berne, October 9, 1874 from $15.95	Universal Postal Union Full Sheet of Fifty 15 Cent Airmail Stamps Scott C43 from $19.95