This book will be enjoyed by "The Antique Tool Researcher, the Flea marketer, the Tool Collector Historian", and many others. The 39 pages of Patent information is very useful for that person looking for History of Patent Dates, Patent Numbers, or the Patentee. The Nail Puller does the same job as the claw on the hammer, but it does it differently. Mainly, this is about the Slide Hammer type of Nail Puller, and many variations of it. There was a time when each nail was forged by a Blacksmith . That made the nail more valuable than the wood it had been driven into. Wood was very plentiful in the mid-19th century. My book will show you examples of Square Nail Pullers that go back to 1849. If it became necessary to change your resident location, you might possibly take your house apart, just to get the nails. You might even burn your house down and pick up nails in the ashes. Herein contained are many examples of the Slide Hammer type of Nail Puller. From the stand point of History, there are many copies of Trade Magazine advertising, showing the advertisement and some times the cost of the tool, as far back as 1890. I have included a "Guide to Scarcity", which will help you determine the "Frequently Found" or the "Not Likely to be found" Nail Puller. Included are 252 copies of patent sketches taken from the original patents, giving the Patentee, (inventor and/or manufacturer) the patent date and patent number. There are more patents in the patent office, than nail pullers that were manufactured. Contained herein are about 60 pictures of more than 100 Nail Pullers in my collection, which are captioned to reflect points of interest. I was unable to find one of each Nail Puller ever produced, but here is a good representation of what I could find over a 5 year period . For the Researcher, included are 39 pages of index composed by Patentee, Patent Date, and Patent Number, which are cross referenced one to the other.