Also, I did view two issues of The Electric Company Magazine on the Internet Archive today (one from September 1984, and another from 1976 or 1977). They were supposedly later issues, as I did not see anything involving cast members (it was definitely during a time when non-CTW properties, such as Hanna-Barbera and comic strip characters, and even Miss Piggy, and celebrities such as Michael Jackson, appeared on covers, which occurred in the late 1970s through the changeover to the publication's rebranding to Kid City in 1988. I did discover Spidey Super Stories comic stories in such publications, but they did not feature any of the show's cast - in fact, Peter Parker's girlfriend, Mary Jane, did appear, and the stories (which were only four or five pages long) were more true to Marvel Comics style - I wonder if many were recycled in later issues?
I certainly hope that someday, more issues of The Electric Company Magazine will see the light of day on the Internet Archive.
Back to the show, I remember the final segment of the series, "That's All", which featured the entire cast and the Short Circus, but Rita Moreno never appeared in that closing number. Was Rita Moreno on maternity leave at the time?