Complex sentence: As a joke of the time put it, he had "a surplus of capital and a surplus of Gimbels"; in 1894 he acquired the Granville Haines store in Philadelphia, and in 1910 opened another branch in New York City.
Split into simpler sentences: As a joke of the time put it, he had "a surplus of capital and a surplus of Gimbels". In 1894 Gimbel acquired the Granville Haines store in Philadelphia, and in 1910 opened another branch in New York City.