Stamps have been issued in other shapes, however: the circular stamps of New Zealand, triangular and pentagonal, and Sierra Leone and Tonga have issued self-adhesive stamps in the shape of fruit, Bhutan has issued a stamp with its national anthem on a playable record, etc.
may be purchased in small groups known as "booklets"; see postage stamp booklet postage stamp booklet is a set of one or more small panes of postage stamps, usually totalling about 10-20 stamps, folded over and placed in a cardboard cover.
Booklets of telegraph stamps are known to have been issued by the California State Telegraph Company in 1870, and by Western Union in 1871, and on 14 October 1884 an A.W. Cooke of Boston received Patent 306,674 from the United States Patent Office for the idea of putting postage stamps into booklets.