I found a binder full of notes and work for GEN TECH 3EE3 (Evening - Engineering Economics) out at a bus stop last night. I have turned the binder into McMaster security and contacted the professor.

This is not my binder, but I think this is a super nice thing to do. You are considerate in thinking that someone has lost their notes that they have diligently kept all semester and are probably frantic for. You, sir, are to be commended.

Just wanted to say thank you for doing that! That's really nice of you

That, or you just ruined someone's carefully thought out experiment.