My mom's mom’s family started a business in the 1850’s that made it into the
1960’s - Binz Hide and Tallow in St. Louis MO.  In addition to processing hides,
they collected meat scraps from places all over town and rendered them.  I was
never there, but my mom said the smell was horendous and stuck on your clothes.
When I think of leather, I think of this

Ed Minch