Nothing helps a collector more than a book, opened, read & applied to one's collecting goals. Whether it be a paper money catalogue, or other references, hard copy info is "priceless" IMO. There are many very gently used currency (& other related) references being offered at the Paper Money Forum (PMF). Check out this link for the Book Sale to benefit the PMF. Please take a look & contact the PMF to make arrangement for payment if you see something you like.
