Americans had established schools, hospitals, and businesses in China prior to the 1949 triumph of the Communists under Mao. What would be the fate of these institutions and their staff under the new dispensation?
On this day in 1825, the issued its first patent for a system to "preserve animal substances in tin". Ezra Dagget and his nephew Thomas Kensett, the patent holders, had been canning salmon, oysters and lobsters out of their seafood processing factory in New York City since 1819.
Tin cans had been put into use for preserving food since 1813, but their use had largely been limited to specialized environments and circumstances like military expeditions and arctic exploration, rather than commercial use.
