If your club has been around for a few years, you probably have well over 100 issues of your publication. In a lot of cases, these publication only exist on paper. Either they were created before the desktop publishing revolution in the early 1990's, or perhaps the orginals have been lost.
Whatever the case, your members would love to have access to this information. The best format to use is Adobe's ubiquitous PDF format.
Using the PDF image+text option, you can maintain an exact "photocopy" of the page with an invisible layer of searchable text. Acrobat can do the OCR (Optical Character Recognition) necessary for this format.