M. Witmark & Sons was a leading publisher of sheet music for the United States "Tin Pan Alley" music industry. The firm of Marcus Witmark & Sons was established in New York City in 1886. The father, Marcus Witmark, was the legal head of the company; but from the beginning it was run by his sons Isidore, Julius, and Jay, who were under legal age when the company started (ranging in age from 17 to 14 years old). They started out publishing their own compositions. They were adept at plugging songs, and within a few years were publishing the works of such composers as Victor Herbert, George M. Cohan, Ben Harney, Pauline B. Story, and John Walter Bratton. Witmark originated the practice of giving free "professional copies" of their new music to famous and established singers and bands, which proved so successful an advertising method that it was copied by the rest of the music publishers. When the International Copyright Law was passed in 1891, Witmark pioneered publishing versions of British music in the United States and arranging for American hits to be published in the UK. Family Succession of ownership Tams-Witmark In 1922, Sargent Aborn (1867–1956), brother of Milton Aborn (1864–1933), both of the Aborn Opera Company, acquired the Arthur W. Tams (1848–1927) music library, a collection that had become the largest circulating music library in the world — and by extension, Witmark's biggest competitor in the music-rental field. In January of 1925, M. Witmark & Sons acquired the music Tams library, ending 30 years of intense rivalry. The combined Tams-Witmark library, operating as the Tam-Witmark Music Library Inc. (a New York corporation) secured its position as the largest source of musical-comedy and operatic music for amateur and professional productions. Sargent Aborn was president of Tams-Witmark from its founding until his death in 1957. In 1942, Sargent Aborn and his son, Louis Henry Aborn (1912–2005), acquired the rights to the Tams Library. As of 2014, the co-chairmen were Robert Aborn Hut (born 1935) and Sargent Louis Aborn (born 1948) and the executive vice-president was Peter Aborn Hut (born 1940). All three are grandchildren of Sargent Aborn. Tams-Witmark was acquired by Concord in 2018. In the 1960s, Tams-Witmark donated several lots of its old inventory to the special collections of five libraries known for music research: the Library of Congress, the Eastman School of Music, Westminster Choir College, and the