Locks and keys

Overview: Family and business correspondence and financial records largely relating to the invention of the Yale Lock and Linus Yale's attempts to establish a sucessful business in Newport, New York, and Philadelphia. The papers of the Yale Lock company continue after the death of Linus Yale and contain documents on its financial reorganization and on suits against infringements of Yale Patents (1868-1870).Yale's intellectual and social life is revealed in his correspondence with Henry and Walter Brown,...