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 field notes regarding bird observations in diary format, handwritten in ink on unlined paper and grouped by year from 1896 to 1910. Most volumes are originally bound with string, though the 1899 volume is bound into a notebook with an embossed suede cover. The volumes include newspaper clippers pertaining to ornithology and climate.

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.