There is a citrus book on ebay with a publication year 1971.It doesn't look like something special but if you have a collection, you may be interested in checking it; The Citrus Seed Grower's Indoor How-to Book Hazel Perpe.

http://cgi.ebay.com/The-Citrus-Seed-Growers-Indoor-How-to-Book-Hazel-Perpe_W0QQitemZ150297219095QQcmdZViewItemQQptZUS_Nonfiction_Book?_trksid=p3286.m20.l1116

I purchased this book from Abe's Books for $1.00. Abe's Books has quite a few copies in stock. - Millet 1,400-)

In just one hours time, I read the entire complete book titled "The Citrus Seed Grower's Indoor How-to Book" by Hazel Perper. The book is the worst citrus book I have ever read- bar none. Terrible. Worthless. I lost count of all of the mistakes. A dollar wasted. - Millet (1,382-)