Yeah. If you look at a copy (or photo) of the United States 1869 issue featuring the ship called 'The Adriatic', the steam engine in the ship was built by one of my ancestors, John Reid.
I remember in grade school that for some reason (fundraising, I think) we students were asked to bring canceled stamps in to school.
One of the other kids asked if he could look through the stamps. Thank made me curious, so I asked if I could as well.
I had never paid attention to stamps before, and the different kinds were fascinating (all were 3 cent stamps). I did follow up and was interested for a while, but soon lost interest.