Research Papers and Reprints Title Categories Update Date Download Overrun Countries Series Stamps – Paul Holland1 309 downloads Publications January 27, 2025 Please login to download The 1903 Two Cent Washington Shield Issue1 153 downloads Exhibits August 5, 2024 Download Series 1902 United States1 139 downloads Exhibits August 1, 2024 Download Research Paper #25 – Prominent Americans Series: Bureau Precancel Printing History1 326 downloads Research Papers October 10, 2022 Please login to download U.S. VENDED POSTAL INSURANCE (1965-1985)1 127 downloads Exhibits June 30, 2021 Download The Transports – G.H Davis1 255 downloads Publications September 4, 2020 Please login to download The Prexies – Roland E. Rustad1 299 downloads Publications September 4, 2020 Please login to download The Airmail Special Delivery Stamps of the United States – Ralph L. 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Check List of the Postage Stamp Booklet Covers1 240 downloads Research Papers July 18, 2015 Please login to download Research Paper #22 – A Census of Relief Breaks on the 1890 Two-Cent American Bank Note Company Issue1 134 downloads Research Papers July 18, 2015 Please login to download Research Paper #21 – Printing History of the 6¢ 1938 Airmail Stamp, Scott C231 128 downloads Research Papers August 26, 2015 Please login to download Research Paper #20 – Selected Records from the Files of the 3rd Assistant Postmaster General 1869-18891 94 downloads Research Papers August 26, 2015 Please login to download Research Paper #19 – A Type Written Transcription of the U.S. Post Office Dept. 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Plate Numbers and Positions.1 97 downloads Research Papers June 29, 2015 Please login to download Research Paper #03 – Dummy Stamp Booklets, 3rd edition, 19981 101 downloads Research Papers June 29, 2015 Please login to download Research Paper #02A – Supplement – Folded-Style and Pressure Sensitive Booklet Checklist, Updated 13th Edition1 195 downloads Research Papers June 4, 2017 Please login to download Research Paper #02 – Folded-Style and Pressure Sensitive Booklet Checklist, Updated 13th Edition1 225 downloads Research Papers June 29, 2015 Please login to download Research Paper #01 – Printing History of U.S. Postage Dues, Series of 1894 and 1930 flat plate printings1 148 downloads Research Papers June 29, 2015 Please login to download Reprint #5 – The U.S. 1847 Issue1 286 downloads Reprints September 28, 2015 Please login to download Reprint #4 – Luminescent Tagging On United States Stamps1 360 downloads Reprints September 28, 2015 Please login to download Reprint #3 – Small Die Proofs of the 20th Century’s Second Quarter1 176 downloads Reprints September 28, 2015 Please login to download Reprint #2 – Perforation Measurements of United States Stamps1 415 downloads Reprints September 28, 2015 Please login to download Reprint #1 – The Washington-Franklin Heads: Simplified!1 563 downloads Reprints September 28, 2015 Please login to download