other Washington Post Sunday crossword, January 15 (contains answers)

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Title: Happy 300th
Theme entries: trivia about Benjamin Franklin

Example:
111A, Late 1770s appointment for 23 Across: Minister to France

Things I learned, with web links so you can learn them too:

43A, Plain of Jars land: LAOS (what a neat place)
44A, Humidor items: CLAROS
81A, Bug of interest to Reed: AEDES (so that’s why Walter Reed is called that!)
85A, Miss Pym’s creator: TEY
5D, Golden Fleece source: RAM
24D, Obadiah preceder: AMOS
40D, Delia’s sister: NORA (Oh, duh, Ephron. Never mind.)
41D, Stock phrase: AT PAR
47D, Eastwood ex: LOCKE
53D, Leave stranded: ENISLE
59D, View from Arles: RHONE
102D, Seth begat him: ENOS

Overall:
I changed 5 squares and looked up 12 things.