A Natural History of American Birds of Eastern and Central North America | 
I love finding watermarks! I hauled this book recently and, beyond the well-written descriptions and plates which will be an excellent birding resource, I was thrilled to find this watermark for Warren‘s Olde Style. A quick search uncovers that this was a line from S.D. Warren Company, Boston. The official description, taken from an advertising digest I found online is, “a watermarked antique finish for type and line illustration.” Cool!
My biggest book I have right now is also one that I treasure. It is a 1955 book on North American birds that I inherited from my uncle. He was a country Doctor, and the Mothers of WWII from Prairie Creek, Indiana gave this to him back in the fifties to thank him. They knew he loved nature and spent time watching birds. This book has beautiful illustrations, and I still use it to identify birds. #MyBiggestBook
