mystery slides

[ljplicease]

I am not sure who took these. They were mixed in with grandpa's slides, but I am pretty sure they aren't his. They are of New Mexico, I can tell because the bridge (see below) is adorned with the Zia sun symbol, and besides it looks like New Mexico. The film itself is a bit of a mystery, as it is a format that I don't recognize. It is about the size of 35mm film, but there are no sprocket holes so the exposure surface is actually taller than an orginary 35mm frame, but it is also a square format, so it is not as wide.