Almost 1,600 specimens collected for the original survey of all four reservations are housed at the Harvard University Herbaria. You can download a .csv file that includes the scientific names and herbarium barcode. Specimen records and images are available by searching using the barcode number in the Index of Botanical Specimens. The barcode search field is located in the lower right.
Related to the original survey, a survey of the Middlesex Fells Reservation was conducted by Bryan Hamlin and Walter Kittridge from 2003-2011. A .csv file and specimen records in the database are also available for these specimens.