Martin Carter supervised the Newark car shop while Thomas was the company business manager from offices in San Francisco . The company specialized in construction of narrow-gauge railway cars , and patented a passenger car bogie especially suitable for such cars . Another company patent for a specialized forest railway disconnected log bunk bogie brought equipment orders from many early logging railroads of the Pacific coast . Car manufacture ceased in 1897 after building an estimated five-thousand cars for California and locations as distant as Alaska , Oregon , Mexico , Guatemala , El Salvador , Hawaii , and Brazil . Thomas died in 1898 , and the company officially closed when Martin retired in 1902 , but the Newark shop produced a few more parts until the 1906 San Francisco earthquake
1906 San Francisco earthquake
1906 San Francisco earthquake
Carter Brothers