off the Windsor group in 1970. In the mid-1970s, RKO sought to dispense with the FM outlets it had established in some of its oldest markets, while maintaining its presence on the AM dial: San Francisco's KFRC-FM was sold in 1977; around the same time, WHBQ-FM in Memphis was divested as well. An attempted sale of the company's Boston FM station was aborted. In 1959, RKO and NBC reached an agreement on what would have been the highest-priced license transfer in broadcasting history to that time. The deal would have seen RKO acquire NBC's WRC-AM-FM-TV in Washington, swap WNAC-AM-TV and WRKO-FM (the former WNAC-FM) in Boston to NBC for that company's WRCV-AM-TV in Philadelphia, and sell the WGMS stations in Washington to Crowell-Collier Broadcasting (as Federal Communications Commission {FCC} regulations at that time would not permit ownership of both the WRC stations and the WGMS stations). The deal was an attempt to resolve a controversy surrounding a 1956 swap of NBC and Westinghouse Broadcasting stations in Philadelphia and Cleveland. In 1965, the FCC declared the 1956 trade null and void, effectively reversing the swap, and denied the proposed license transfers on what would prove to be the ironic ground that NBC would enter the Boston market as the product of its dishonesty in the Philadelphia/Cleveland transaction. Coincidentally, RKO's former Boston television station became an NBC affiliate in 1995 after its longtime affiliate, Westinghouse-owned WBZ-TV, switched to CBS in a precursor to that network's merger with Westinghouse, which includes the aforementioned Philadelphia stations. RKO's lineup included some of the leading top 40 and urban contemporary radio stations in North America. In May 1965, KHJ-AM introduced the highly successful Boss Radio variation of the top 40 format. Consultants Bill Drake and Gene Chenault, who had devised the restrictive programming style, soon brought it to RKO's AM stations in San Francisco, Boston, and Memphis, also with great success. The format helped Windsor's CKLW to become the dominant station not only in Detroit, but also in more distant cities such as Cleveland and Toledo, Ohio. Before long, many non-RKO broadcasters around the country were hiring the Boss Radio consulting team to convert them to the format, or simply imitating it on their own. In October 1972, KHJ-FM debuted Drake-Chenault's new automated rock oldies format, Classic Gold, another major hit. As WOR-FM and its later incarnations, rock-formatted WXLO and urban WRKS-FM, RKO's New York FM