Williams bought the Brooklyn Music Hall in 1897, later changing its name to the Gotham. He also ran the Novelty in
Williamsburg, Brooklyn, sometimes shuttling acts by carriage so they could play both theaters on the same day. The
Vaudeville Managers Association was formed in 1900 in an attempt to contain the salaries paid to performers. Williams refused to join. He believed in paying well and giving the performers good conditions. Performers found him a modest and approachable man, and enjoyed working for him. Williams' third theatre was the Orpheum in Brooklyn. He opened the Orpheum in 1901 on a plot of land he had bought in 1895. At the time it was thought to be the most beautiful theater in the world. Percy Williams continued to expand his operation, partnering with wealthy and well-connected men who could overcome problems with permits and licenses. He built or leased the Greenpoint, Crescent and Bushwick theaters in Brooklyn, the
Bronx Opera House, the Circle and Colonial theaters in Manhattan, the
Alhambra in Harlem, a theater in Philadelphia and another in Boston. As of 1905 the theater owners who booked through the
William Morris Agency seemed likely to become dominant in the vaudeville industry. They included Williams,
Frederick Freeman Proctor,
Timothy Sullivan and
Willie Hammerstein. However,
E.F. Albee was building up the
Keith-Albee circuit into the largest vaudeville chain east of the
Mississippi. Albee created the United Booking Office (UBO) to coordinate and regulate vaudeville, and became the UBO general manager. Williams resisted joining the UBO, but was eventually persuaded to become the UBO business manager. He was pushed into this move by competition from
A. L. Erlanger and
Lee Shubert. The city of New York had "Blue Laws" that banned theatrical performances on Sundays, but did not enforce them strictly. Mayor
George B. McClellan ordered their enforcement in 1907. In protest, the theaters closed down until the mayor was forced to ease up. Williams took the city to court over the laws, and won his case before the New York State Supreme Court. William's Orpheum Company advertised "Clean Shows in Clean Houses." In 1907
Mae West performed at the Gotham Theater as a child actor in
Hal Clarendon's stock theater company. Williams looked for acts in Europe, and signed contracts with
Vesta Victoria,
Vesta Tilley and
Marie Lloyd among others. In 1909 Williams joined
The Lambs, the famed theatrical club. In 1910 Williams staged a production called
The Wow-Wows at the Alhambra, Bronx, Orpheum, Greenpoint and Colonial Theatres. Players who appeared in this show included
Charlie Chaplin and
Stan Laurel. In 1910 Williams was managing more vaudeville theaters in New York City than any other. He had two in Manhattan and one each in the Bronx, Brooklyn and Queens. He said that after several trips to the Old World to search for talent he found that all he was looking for was in the USA. He said of vaudeville performers, ==Last years==