WPTZ Channel 3 signed on as Pennsylvania's first television station on Labor Day, September 1, 1941.
On Monday October 18, 1954 WPTZ NBC 3 became WRCV-TV NBC 3-The Network Flagship Station up to Friday June 18, 1965 when Westinghouse Broadcasting brought the KYW-TV callsign from Cleveland to Philadelphia.
Westinghouse Broadcasting & Cable and Group W Productions used a proprietary typeface called "Westinghouse" (also known as "Anklepants", due to a similar but identical font) for the station logo throughout their own entire ownership of the station as shown here. This had come after Westinghouse and NBC had switched stations (with the KYW calls and license transferring to what's now as WKYC in Cleveland, OH and the WRCV-TV Calls has Changed into KYW-TV) only for the Federal Communications Commission to cancel the trade due to allegations of coercion on the part of NBC-TV and it's allowing to have the KYW-TV Calls goes to Philadelphia, PA on Saturday June 19, 1965.
In 1995, KYW-TV switched its affiliation from NBC to CBS, as a result of a deal with Westinghouse that renewed its existing CBS stations in San Francisco and Pittsburgh. (On the date of KYW's switch, WJZ-TV also assumed an affiliation with CBS, in a transaction that saw its ABC affiliation transfer to WMAR-TV.) Westinghouse later acquired CBS altogether and making it KYW-TV as a network O&O and co-flagship Station.
Mike Douglas with an RCA TK-43 camera
RCA TK-43 cameras behind the scenes of The Mike Douglas Show
3 For All (1979-1980)
1982 Station Ident
1983 Station Ident
Evening Magazine billboard, 1983
New Year slide, 1986
KYW-TV (NBC) Channel 3 Let's All Be There ID (1985-1986)
Hill Street Blues billboard, 1986
Miami Vice billboard, 1986
Remington Steele billboard, 1986
St. Elsewhere billboard, 1986
KYW Come on Home to Channel 3 promo (1987-1988)
Your Constitution Station ID (1987)
Station ID (1989-1991)
The Pride of Philadelphia id from 1990-1991
Channel 3 Eyewitness News 6PM outro from March 2, 1990