Willard Scott joined the radio station the following year, forming a professional and personal bond with Walker that continued for his entire life.

From 1955 to 1974, Walker teamed with Scott as co-hosts of the nightly Joy Boys program, an improvised comedy radio show in Washington.

[2] On Joy Boys, Scott sketched a list of characters and a few lead lines setting up the situation, which Walker would commit to memory or note on his Braille typewriter.

In 1990, Walker co-hosted WAMU's The Big Broadcast alongside his friend and colleague, the originator of the show, John R. Hickman.

"[5] In late 2015, Walker was diagnosed with cancer and retired from The Big Broadcast to focus on his health and spend more time with his family.