Can't help you, but you can look at this site as a start.

Here is a link that might be useful: your old books

http://used.addall.com/ is a really good place to start.

The Grant bio is offered for $30-60 if in really great condition. He had a lot of bios written about him.

The "Camels for Military Purposes" on the other hand YIKES!!!!! If it's the 238 page one, it's probably the first and only edition. The dark green cover is not the usual one, so you need to figure out if it's a Senate library binding.

Can you post pics of the binding and give more info on the # pages and illustrations?

And, read the book. It's extremely interesting, as was the US Army's Camel Corps.

Here is a link that might be useful: Camels For Military Purposes

ADDING: It was common for books to be offered in a variety of bindings. I see one listed with the dark green cloth, so it was one of the original bindings.

*******
And I lust after that book!

I will post pics as soon as it gets light enough outside to take them. In the mean time, the book does have 238 pages with a fold out in the back. The ink on the spine is gold, some rubbed off. The corners of the book are not frayed but are a little bent inward. There are some water stains on a few pages, but no tears or wrinkles and appears to only occur on the outer pages with no interference to any of the print. There are charts among the illustrations that list plants and shrubs with the Arabic name and translations.

It's tough to figure out how to handle a really rare book, because you don't know where the buyers might be.

If you want to sell it, let me know and I'll help you find a dealer who specializes in military history or western USA history. They may have clients who are looking for that book. You can estimate that a dealer will offer you about half of what they think they can sell it for. It's not a rip-off, they need to eat and pay rent!

Or, you could try your luck on eBay, with a reserve and see what happens. Collectors there often pay more than you can get from a dealer.

There was something on this board some time ago about a book about the life of Grant being cowriten by Samual Clements, Mark Twain. Seems in his later years, President Grant fell on hard times and was pennyless. Clements aided Grant in publishing a book about his life as a way of helping Grant financially. Don't know anything about the other book.

One way to find a price for an old book is to visit the web sites of old book sellers such as "Alibre", "BookFinder", or "Barnes and Noble".

http://www.abebooks.com/servlet/SearchResults?sts=t&tn=camels+for+military+purposes&x=56&y=15

price depends on condition, which printing it is ect. It sounds like it is not first printing as other first printings are in dark brown cloth hard covers.