James,
After reading about the waterproof Bible, I went to the publishers web site, BardinMarsee.com and discovered that they also manufacture waterproof notebooks. Many times during my military career I have needed to write something while in the rain. These would have been great, but alas they were not available in the 1970s.
These notebooks are available in both top and side spiral, and in the most common sizes, all at an attractive price. Thanks, – Greg L.