Wedes died July 22 after a long battle with multiple myeloma, a form of blood cancer. He was 84.
TV and radio personality Pat Cashman plans to serve as the master of ceremonies at the memorial celebration. He is to be joined by Wedes family members and notable "Patches Pals."
Wedes portrayed the beloved J.P. on KIRO-TV from 1958 to 1981 and at countless community events since. One of his last appearances was before a standing-room-only crowd at the Evergreen State Fair in Monroe.
His Emmy award-winning TV show was one of the longest running local children's shows. An estimated 12,000 J.P. shows were televised.
Admission Saturday morning at the 2,900-seat hall is free, but seating is on a first-come, first-served basis. Doors open at 10 a.m. There is a suggested $5 donation to Seattle Children's Hospital.
The memorial tribute is made possible by the city of Seattle, the Seattle Center, History House and many Patches Pals.
The event is to be streamed live at kirotv.com and rebroadcast at 8 p.m. Saturday on Channel 7.
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