You're kidding! You mean those books that I throw away every year have
value?

Yes they do. You can easily sell them on eBay for $5-$10 + shipping.

The real lesson here is that McMaster-Carr (thanks for the reminder
about them!) is missing the boat: they should _sell_ the blasted
catalogs and credit the cost after a certain number of orders and/or
account total, for repeat customers, etc.

Bill