I posted a while back about a Marcia Brady reference in the comic strip "Red & Rover."
A PCJM reader kindly pointed me to this page, which explains the whole history of that comic's Marcia fascination, complete with old strips. And I love how he misspells Marcia as Marsha for a long time before figuring it out.
I have to say, I associate "Marsha" with oldtime secretaries from the 1950s, and much prefer the "Marcia" spelling. And it makes me think of the time Marcia ran for school office and Cindy's sign said "VTOE FOR MRACIA" or something. Cindy was always kind of a dim bulb.