From the 1930s through the 1950s, KIRO recorded countless hours of CBS programming for time-delayed rebroadcast to its Pacific Time Zone listeners. These electrical transcriptions are, in many cases, the only recordings made of World War II-era news coverage over the CBS Network. The discs were donated to the University of Washington in the early 1960s and are now held at the National Archives as the Milo Ryan Phonoarchive Collection. In 1948, the original KIRO-FM went on the air at 100.7 MHz. It initially simulcast its AM sister's programming but in the 1960s it became a beautiful music outlet. In 1975, it changed its call letters to KSEA and today is KKWF. Preparing for a future television allocation, KIRO moved in 1952 from downtown studios to a larger building on Queen Anne Hill. This peak was already home to the KING-TV transmitter and would soon be the site for KOMO-TV as well. Queen City Broadcasting was awarded Seattle's last remaining VHF TV license in 1958, and signed on as CBS affiliate KIRO-TV on February 8. Aside from a short two-and-a-half year period from 1995 to 1997 when it served as a UPN station, KIRO-TV has served as Seattle's CBS television affiliate since. 1960 to 1980 Haas sold KIRO to The Deseret News Publishing Company, part of the Church of Jesus Christ of Latter-day Saints, in 1963. He earned a handsome return on his investment 28 years earlier. When the LDS Church reorganized its broadcasting properties as Bonneville International Corporation, Haas joined Bonneville's board. Bonneville executives Lloyd Cooney and Ken Hatch arrived in Seattle to lead KIRO-AM-FM-TV, in 1964. Like many network radio affiliates following the demise of full-time block programming, KIRO spent the 1960s playing middle of the road music in addition to long-form news and interview shows. Morning host Jim French spent several years broadcasting from the rotating restaurant atop the Space Needle and was live on the air from that perch during a 6.7-magnitude earthquake in April 1965. Bonneville moved its Seattle radio and TV stations to the newly constructed "Broadcast House" at Third and Broad Streets in 1968. In 1973, KIRO ended a 35-year affiliation with CBS and switched to the Mutual Broadcasting System. Around this time, KIRO also picked up Herb Jepko's "Nitecap," a groundbreaking overnight telephone-talk show from Salt Lake City sister station KSL, a 50,000-watt "flamethrower" like KIRO. "Newsradio 71 KIRO" debuted in June