See COVE Master Map entry on California: 

https://editions.covecollective.org/place/california

In London Labour and the London Poor edition: 

Phase 1

The Negro Crossing-Sweeper, who had lost both his Legs. (Volume 2): "'In February, 1851, I engaged to serve as cook on board the barque Madeira, of Glasgow, Captain J. Douglas, on her voyage from Glasgow to California, thence to China, and thence home to a port of discharge in the United Kingdom. I signed articles, and delivered up my register-ticket as a British seaman, as required by law.'"