Credit to Treefitty for helping with these ones:
#02 Small House, SE on the Braithwaite Land
#07 Inside a small cave, SW of Bacchus Bridge, Dakota River
#20 On a small island, South of Rio Bravo, San Luis River
#12 Upper floor Barnhouse, Solomon's Folly
So, to summarise there's:
8 Newspaper Cheat Codes
20 Found Locations
9 Unknown?
#09 Eat of Knowledge
#14 Be greedy only for foresight
#16.1 Guide me better
#16.4 I still seek more
#26 You want something new
#27 The best of the old ways
#30 Keep your dreams light
#32 You want freedom
#33 You want everyone to go away