Thank you for the kind comments. That is an original book. It originally sold for $3.50 from the GPO. I have seen one go for $99.00 on ebay. I don't think it is worth that much. There are some errors in the book based on what was known at the time so I acknowledge them and you will know which is which.
Regards,
John
P.S. If it has a staple or staple hole in the front cover then it was originally issued to a military EOD team. An EODB cover letter was attached to the field guide to make it official.