The prices in the book stalls aren't cheap, but I figure they will increase in value and usually the book is no more expensive than if you bought a new book. There is also an awesome feeling about holding a very old book, such as the Sojourner Truth Narative. While we are on the subject of antique malls and stores I must tell you what great sources of general information they are. It is like going to a museum where you can touch and buy everything. Don't look just in the book stalls, check out the old clothes to see how they were made for costumes.
Old magazines tell about life, and how people lived.
Examine the knicknacks, furniture, everything. Sounds obvious but until about five years ago I hardly ever even went into antique stores. Local college libraries have some of the oldest books that I have read, and the best part is that I didn't have to pay for them. Some libraries have primary resources on something called LAC which is a microfisch thing. They also have newspapers and magazines on microfilm going back to the nineteenth century.