Wow, I just discovered this gold mine. Every issue of
The New Yorker back to 1925 is freely accessible to you and me, either in txt or digital scans. Registration is free and takes all of ten seconds. I just found the issue with Dorothy Parker's
"The Waltz" with original illustrations

What a real treasure online. Go get it, guys!
http://www.newyorker.com/archive
"Ad hoc, ad loc, ad quid pro quo ..."