Box 73

Scope and Contents note From the Series: Series “V. Tools and realia” dates from 1840 to circa 1920s and contains objects and research materials used in the Birkinbine Engineering Company offices. This series includes Birkinbine patents, notably the combined fire hydrant, and other patent models from the State Machine Company in Hartford, Connecticut. It contains envelopes of soil samples from Little Elk Creek and a rolled silk fabric sample. This series also contains office supplies from the Birkinbine Engineering Company,...