The little I know about them is that William Gordon worked under Toomey and Flynn for a little while, and that William and his son David designed Willow Oaks CC in Richmond, VA - a pleasant course with a couple of holes along the James River, but nothing spectacular.
Below is a brief biography of the two from the Willow Oaks website.
"(William) Gordon was an outstanding athlete in his youth and served as athletic instructor with the U.S. Navy during World War I. Upon discharge he took a job as salesman with the Peterson Seed Company and in 1920 joined the Carter's Tested Seed Company as superintendent of its golf course construction division. In this capacity he constructed courses for such well-known golf architects as Willie Park, Jr., Leonard Macomber, Donald Ross and Devereux Emmet.
In 1923 Gordon joined the firm of Toomey and Flynn, where he remained until 1941. During the Depression, he was also part owner and manager of Marble Hall GC in Philadelphia. Gordon founded the Pennsylvania Public Golfers association and served as its first president from 1936 until 1940 and was also a member and president of the Philadelphia Public Golfers Association.
In 1941 Gordon formed his own corporation, which was involved until 1945 in the seeding of military installations. For the next five years the firm constructed golf courses for Donald Ross and J. B. McGovern. From 1950 to 1973 Gordon designed and built courses on his own under the incorporated name of William F. Gordon Co. Most of his courses planned after 1953 were done in collaboration with his son David. He died in 1974 at his home in Abington, Pennsylvania.
(David) Gordon became a partner in the Gordon firm in 1952 and was involved in all aspects of the business. He continued to maintain the practice after his father's death in 1974, retiring from active work in the mid 1980's.
In partnership with his father and on his own, he designed hundreds of courses throughout the United States, primarily on the East Coast. In addition to Willow Oaks Country Club, which he designed with his father, he also designed the following Virginia courses: Ethelwood CC (Richmond, 1957); Warwick CC; and Williamsburg CC (1960). He was also responsible for a 1963 remodeling of Hermitage Country Club in Richmond, Virginia"