| The Canal Zone Study Group |
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| Special delivery covers paid with U. S. stamps |
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| Fees for Special Delivery in U.S. |
| FEE 10c 13c 15c 20c 30c 45c 60c 80c $1.25 $2.00 |
| DATE 06/24/04 11/01/44 01/01/49 01/01/52 07/01/57 07/14/69 05/16/71 04/18/76 07/18/76 06/05/78 |
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