ANS members here probably already have learned that they are offering a limited group of important reference books as 'print on demand' (printed one at a time as ordered, hardbound or paper, shipped directly to you from the printer) for very attractive prices. For example, the important 'Coins of the
Ptolemaic Empire' bronze and precious metal volumes are available individually, and in paperback for the first time. Also the 'White Gold'
electrum coinage reference. Their POD project offers some nice ways to add to your numismatic
library. You can find more about these new POD books on the
ANS site -
http://numismatics.org/store/category/print-on-demand/PtolemAE