Scope and Contents A local entomologist, Aaron wrote up a Record of captures, 'pinnumbers" and field notes of his collection, 1882-89, covering the nearby New Jersey and Philadelphia locale. Isaac C. Martindale obtained specimens from Aaron, borrowed the "Record" and made the present transcript for his own use. Aaron was an early editor of Entomological News and much of the included correspondence pertains to matters of editorial interest. In later life this Aaron changed his name to the hyphenated form...

Overview Joseph Mellick Leidy (1823-1891), one of the great American scientists of the 19th century, possessed a vast knowledge of the natural world. Best known as the Father of American vertebrate paleontology, he also pioneered the fields of parasitology and protozoology, and was the preeminent anatomist of his time. He was also an influential teacher of natural history and an expert in areas as diverse as entomology, geology and pathology. The Joseph Leidy Correspondence collection contains...