I ahve just received my desk copy of the 9th edition of the Schwartz/Lindquist book - Standard Guide to Small Size U.S. Paper Money, 1928 to date.
This edition is the first to be printed with color illustrations, a big step forward for this handy - yet specialized - reference.
Comming in at 360 pages plus advertisements, this 6x9 perfect bound soft cover book lists prices for serial number blocks. It also give print run information.
List price is $32.99, check out price deals at shopnumismaster.com