Canal Zone Study Group Online Documents

These Online Documents makes available documents that are considered important to Canal Zone philately that are hard, if not impossible, to find. Feel free to download these documents and print them out if you wish.

  1. Cristobal Exchange Labels 1905-1911 (PDF, 3MB)
    George Campbell was keeping a table of Cristobal Exchange Labels and would send it to anyone interested in it. In his last report on this subject, in CZP No. 201, page 75, he said that he had catalogued 78 known labels. Mike Ludeman tracks all US exchange labels including those from the Canal Zone and has 82 from Cristobal in his database. He has agreed to let the CZSG include these online. If you are interested in these labels, please contact Mike. He would also appreciate copies of any that are not in included in his list. Please contact Mike at or P O Box 2024, Denton, TX 76202-2024, for more information or with covers with Cristobal Exchange Labels not shown in his list.

  2. A History of Panama and Its Canal in Forty-Two Postage Stamps and Seven Picture Postcards (PDF, 18MB)
    Companion document with speaking notes (PDF, 80KB)
    by David L. Farnsworth

  3. Revenues - Meters and Strips
    by Entwistle

  4. Canal Zone and Panama articles in Mekeel's Stamp Weekly 1910-1921
    by David Zemer

  5. "A Panama Patchwork Revisited" (PDF 20MB)

    Volume 1 - The Maduros and their Postcards

    By Robert Karrer and Brad Wilde.

    Canal Zone and Panama postcards have been popular collectables since before the construction of the canal but until A Panama Patchwork Revisited was published 1989, collectors had lacked an overview of the many different printers, scenes, and types of post cards.

    This 240 page book, printed in black and white, solves that problem for the vast majority of cards which were sold under the Maduro family name. There was only one 300-copy printing of the book and at $ 27, it soon sold out presenting a problem for many of the people interested in knowing more about these cards. In order to make their book more accessible Bob Karrer and Brad Wilde have generously permitted the Canal Zone Study Group to place a copy on its website for the use of not only CZSG members but for everyone interested in one of the great engineering feats of the 20th century and the new Republic of Panama.

    A Panama Patchwork Revisited is in searchable pdf format and converted to digital format by CZSG member Ralph Weil.

  6. "Stamps Of The Canal Zone" (PDF 3MB) By WM Evans. M. D. is a specialistic study of the stamps of a dependency of the United States in which there has ever been a large measure of philatelic interest.

  7. The The Story of Canal Zone Stamps (PDF 13MB) by Dade and Schay. Ralph Weil has done a remarkable job and converted Geoffrey Brewster's personal copy of the Dade-Schay manuscript into searchable text, updated the Scott Numbers to those used today, and embedded color images of stamps and stationery. Some of the original manuscript, usually hand written tables and drawings, is included in the pdf file as images. The copy that we scanned was the Brewster photocopy of the Plass version so any notes that appear to be photocopied are from Plass but clearer notes are by Brewster. The original scan required 262 mb of space but the Weil version is only 13 mb. Because of the large size of the original scanned manuscript, we have not put it on to our website but if you are interested obtaining a copy please contact David Zemer and I will invite you to join my "dropbox" where you can download it.

  8. In another labor of love McNabb's Adhesive Postage Stamps of the United States and its Colonies - Canal Zone by George C. McNabb (PDF 8MB) has also been converted to a searchable pdf document by Ralph Weil. Ralph has again embedded color copies of most of the stamps into the manuscript and updated the Scott numbers to the present system. The original paper copy came courtesy of Richard Spielberg who worked with Ralph on transcribing it. Richard remembers that he got it from David Leeds or Dick Salz. The amount of detail McNabb took into account when analyzing overprints will be appreciated by every student of the early Canal Zone stamps.