I pulled out 40A Shipping option for books: MEDIAMAIL because I used to sell books on half.com back in the day and shipped lots and lots of books media mail. Sure, the speed was slow, but (a) if the buyers wanted it faster, they’d have opted for expedited shipping, and (2) sometimes I wrapped the books in thick cardboard kinda like a present but in a Postal Service-acceptable way.

This puzzle was bananas. Really, bananas. I though things were all crazy until I saw the link at the bottom of the page:

18A Greek goddess of memory: MNEMOSYNE.
33A Site of the impact of the asteroid that killed the dinosaurs 66 million years ago: CHICXULUBCRATER.

Finished this one in 54:37.

Day	This Wk	Best	Average	4-Wk Avg	Streak
Monday	6:04	3:49	9:25	6:35	75
Tuesday		5:22	13:17	9:09	0
Wednesday	8:51	7:38	17:04	11:32	16
Thursday	42:46	12:12	28:43	29:35	2
Friday	18:30	16:23	32:15	21:01	16
Saturday	54:37	20:12	33:02	34:25	16
Sunday		15:11	54:15	47:43	2