"I'll Overcome", with no known original author. Horton's heirs, Carawan, Hamilton, and Seeger share the artists' half of the rights, and The Richmond Organization (TRO), which includes Ludlow Music, Essex, Folkways Music, and Hollis Music, holds the publishers' rights, to 50% of the royalty earnings. Seeger explained that he registered the copyright under the advice of TRO, who showed concern that someone else could register it. "At that time we didn't know Lucille Simmons' name", Seeger said. Their royalties go to the "We Shall Overcome" Fund, administered by Highlander under the trusteeship of the "writers". Such funds are purportedly used to give small grants for cultural expression involving African Americans organizing in the U.S. South. In April 2016, the We Shall Overcome Foundation (WSOF), led by music producer Isaias Gamboa, sued TRO and Ludlow, seeking to have the copyright status of the song clarified and the return of all royalties collected by the companies from its usage. The WSOF, which was working on a documentary about the song and its history, were denied permission to use the song by TRO-Ludlow. The filing argued that TRO-Ludlow's copyright claims were invalid because the registered copyright had not been renewed as required by United States copyright law at the time; because of this, the copyright of the 1948 People's Songs publication containing "We Will Overcome" had expired in 1976. Additionally, it was argued that the registered copyrights only covered specific arrangements of the tune and "obscure alternate verses", that the registered works "did not contain original works of authorship, except to the extent of the arrangements themselves", and that no record of a work entitled "I'll Overcome" existed in the database of the United States Copyright Office. The suit acknowledged that Seeger himself had not claimed to be an author of the song, stating of the song in his autobiography, "No one is certain who changed 'will' to 'shall.' It could have been me with my Harvard education. But Septima Clarke, a Charleston schoolteacher (who was director of education at Highlander and after the civil rights movement was elected year after year to the Charleston, S.C. Board of Education) always preferred 'shall.' It sings better." He also reaffirmed that the decision to copyright the song was a defensive measure, with his publisher apparently warning him that "if you don't copyright this now, some Hollywood types will have a version out next year like