Found a second buildsheet in my car??

I found five buildsheets in my unmolested 73 Satellite.

One under the front seat- not for my car but for another 73 Sat with the same color interior.

A stack of them under the rear seat, one for my car, a couple blanks still attached to the perforated printer paper, and a couple odd ones including one for a 72 Charger that says "do not build" on the bottom...all attached.