Belknap became a member of the Old Guard Metropolitan Regiment in New York City after the war, and later became a junior partner in the hardware firm of William S. Dodge and Company. In March 1877, he was promoted from his rank of
lieutenant colonel and ordinance officer in the
New York National Guard. He moved to Texas in 1877 and lived in San Antonio. On June 22, 1878, Belknap bought all the stock in the San Antonio Street Railway System, and led the first mule-drawn car from
Alamo Plaza to
San Pedro Springs Park. This route developed into the first streetcar line in the city. He became the founder and president of the company that operated the city's only streetcar system. He founded the Belknap Rifles on October 14, 1884, financing the military company for twenty to thirty young men who were denied admission to the San Antonio Rifles. He was an alderman at-large in 1887. He resigned later in 1887 to run for the 10th congressional district. He died while on a trip to
Santa Barbara, California, on June 22, 1889, of
ulcerative colitis. He was buried in the
Green-Wood Cemetery in
Brooklyn. ==References==