One of my sideline obsessions (because I need more) are these mid seventies to early eighties superhero school supplies by Alco. I proudly had the Batman from this set on my desk as a kid and I remember our local stationary store (remember those?) had a display of these in the window.
This Shazam is the sole carded entry into the series, I remember seeing it as a kid wondering why he was holding a lighting bolt like that.
This Wonder Woman is a later run by Alco, Wonder Woman is usually the first one you find of most vintage toy lines.
Stumbled on these at a local toy show of all places. As you can see my collection isn't huge, it probably wasn't wise to turn on others to this, see you on ebay!