1906 Jack London Autographed Signed Cheque Payable To The Socialist PSA/DNA Auth1906 Cheque signed by Jack London author + social activist. The cheque is payable to "The Socialist" a political magazine Central Bank of Oakland check filled out and signed by Jack London, payable to the Socialist for $1. 99, March 6, 1906. London first joined the Socialist Labor Party 1896. That same year San Francisco Chronicle published a story about how the 20 year old London was out nightly in Oakland's City Hall Park, giving speeches to the