This collection contains 2 notebooks of handwritten ornithological sightings from West Roxbury, Massachusetts, dating from 1885-1901, 1 notebook of histology laboratory from 1894-1895 containing detailed illustrations of microscopic biological tissues, and a compilation of Pasquaney nature lectures series from 1897.

This collection consists of one handwritten notebook containing the constitution and by-laws of the Wilson Ornithological Club. It includes amendments made over the years following the adoption of the constitution in 1890, and a list of members and elected officers. The date of adoption of the constitution is noted as June 21, 1890, with amendments and additions made up until 1895.