Cassinia is the journal of the Delaware Valley Ornithological Club (DVOC). The journal is composed of papers relating to the ornithology of eastern Pennsylvania, New Jersey, and Delaware. Seventy three issues have been published to date. Five initial volumes (1890–1900) were published under the name Abstract of the Proceedings of the Delaware Valley Ornithological Club, and then in 1901 the journal was renamed in honor of ornithologist John Cassin.
There have been 21 different editors of Cassinia since its inception: