First day cover (FDCs) – envelopes with stamps attached and canceled on the first day that the stamp was issued. Most modern FDCs bear designs, called "cachets", related to the theme of the stamp issued. Maximum cards – these are postcards where the stamp is on the same side as the picture and they have a close connection. Souvenir pages – with first day canceled stamps on a page describing all design, printing and issuing details. These are similar to first day covers except that they are issued as printed sheets of paper instead of envelopes, and the specification of the stamp is printed by the official source. See picture of first souvenir page in the US. Cinderella stamps – stamp-like labels that are not valid for postage. Postmarks or postal markings in general. Organizations There are thousands of organizations for collectors: local stamp clubs, special-interest groups, and national organizations. Most nations have a national collectors' organization, including the American Philatelic Society (APS) in the United States; the Royal Philatelic Society London and Philatelic Traders Society in United Kingdom; and the Royal Philatelic Society of Canada. The Internet has greatly expanded the availability of information and made it easier to obtain stamps and other philatelic material. The American Topical Association is now a part of the APS and promotes thematic collecting as well as encouraging sub-groups of numerous topics. The Collectors Club, often referred to as the Collectors Club of New York, is a private club and philatelic society in New York City. Founded in 1896, it is one of the oldest existing philatelic societies in the United States. This club like many others has made the transition to Zoom virtual meetings due to Covid and has decided to keep the forum for the future as membership and attendance at club events has grown substantially since they have made their meetings accessible via the internet. Stamp clubs and philatelic societies can add a social aspect to stamp collecting and provide a forum where novices can meet experienced collectors. Although such organizations are often advertised in stamp magazines and online, the relatively small number of collectors – especially outside urban areas – means that a club may be difficult to set up and sustain. The Internet partially solves this problem, as the association of collectors online is not limited by geographical distance. For this reason, many highly specific stamp clubs have