A Guide Book of United States Coins 2019 by R.S. Yeoman was a good book in my opinion. I learned a lot and this book mainly focuses on the different denominations of coins and how much they are worth when they are minted in a specific year and what their condition is. I learned a lot, like there used to be one cent coins bigger that quarters. I also learned that there were two cent pieces that were only minted for nine years. There were also three cent pieces called times when they were silver and three cent nickels later. I also learned that there were half dimes minted for nearly one hundred years. I also learned that there were twenty cent pieces that were mined for only three years. This book really sparked my interest in coins because I realized how many there are. Before, I only knew about the coins that were minted right now, and their previous denominations, wheat pennies, buffalo nickels, etc. This book really got me interested because some of the designs are just really cool. I would really recommend this book to everyone, and it would probably bring more people to coin collecting.