It would be nice if we could recommend books other than those published by the Mountaineers. For the Naturalists' annual course, they use a book that is better than what the Mountaineers has published. For the Photography Committee, there are really only two instruction books published by the Mountaineers. We should be able to add any book listed on Amazon to better help our students.
The recommended and required reading sections of various types of content on our website are specifically for books, maps and merchandise that we can ship from our warehouse.
For other books, etc. information can be added to the rich text sections of the content item. For formatting and more info, please see our Publications Style Guide, https://www.mountaineers.org/volunteer/leader-resources/publications-style-guide#references.