HELGOLAND
| A08.01 | Grosses Handbuch der Fälschungen by O.E. Stiedl and F. Billig, - HELGOLAND - 1935. |
| A08.02 | Helgoland, A Key to the identification of originals and reprints by R. Pollard, 26p. |
| A08.03 | Forgery and Reprint Guide to 19 Heligoland Reprints, J. Barefoot, 1984, 44p. |
| A08.04 |
Alt-Deutschland unter der Lupe, Vol. 5, HELGOLAND, LUBECK |
HELGOLAND Clippings
| A08.500CL | Helgoland Revisted by H. Amtmann, clippings from GPS Specialist, April 1976 - Jan.1973 |
| A08.501CL | Helgoland Reviewed by H. Amtmann, clippings from SPA Journal, March-Nov. 1971. |
| A08.502CL | Helgoland, A Simplified Study by D. Patton, clipping from The American Philatelist, Aug.1956, p. 8. |
| A08.503CL | Serrane Guide: Helgoland, clipping from The American Philatelist, April 1990, pp. 349-350 |
| A08.504CL | The Strange Story of the Heligoland Reprints by G.I. Hardwicke, clipping from The American Philatelist, 1949. |
| A08.505CL | Heligoland: Guidelines for Identification of Originals and Reprints by Robert T. Pollard, clipping from The American Philatelist, November 1987, pp. 1041-1052 |