Detroit Tigers Postcard??
 

Is this just a generic or does it represent Detroit? I don't have it in hand yet so can't show a scan of the reverse side.

My guess would be generic, I don't see it being the Detroit Tigers.

The socks look more like an early college player.

Joe

I concur. Princeton colors, Princeton mascot, Ivy League style cheer.

That is, I concur that he looks like an early college player, not that it's necessarily generic.

The lyrics are part of an old Princeton song (according to my googling).

Thanks fellas! I didn't even think about googling the cheer.