When I sat down to write this post I realized that it’s the 100th installment of materials information that I have submitted to the Interwebs, which, if this were a sitcom, would mean that I’d have a sheet cake with “Congratulations – 100 Posts!!!!” written in frosting set set out on a table, and the key grip would be elbowing the best boy out of the way for the corner piece with the biggest frosted rose on it.

Image courtesy ursulinesmsj.org
But since there’s no cake, I’m going to write about a …