You asked about Currency books: I have numerous, but the two I go to for most quick day to day look ups are:
Standard Guide to Small Size U.S paper Money 1928 to Date:John Schwartz and Scott Lindquist A Guide Book of United States Paper Money: Arthur and Ira Friedburg
Check ebay sold listings a $1 bill with the same serial number sold for $209 recently. But remember the value doesn't go up proportionally to a 20 so it doesn't translate into $4,000 rather 200 is a fair estimate
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