Maria Mitchell Observatory and a Cooke
The Maria Mitchell Observatory was founded in 1908 in Vestal Street Nantucket Massachusetts. The observatory was named after Maria Mitchell America’s (181-1889) first professional woman astronomer.
In 1952 the observatory housed a 5 inch clark telescope which was given to Maria Mitchell in 1859 by the women of America and used as a guide scope for a Cooke photographic triplet telescope of 7.5 inches aperture.
I do not know when the observatory acquired the Cooke and how long it was used there if it indeed is still there today?