Eggleston's Guide is a must-have. Essay by Szarkowski. Los Alamos is usually expensive even in used format, but it predates the guide, and show the maturation of his art.
Using film since before it was hip.
"One of the most singular characters of the hyposulphites, is the property their solutions possess of dissolving muriate of silver and retaining it in considerable quantity in permanent solution" — Sir John Frederick William Herschel, "On the Hyposulphurous Acid and its Compounds." The Edinburgh Philosophical Journal, Vol. 1 (8 Jan. 1819): 8-29. p. 11
Los Alamos and Guide are both essential Eggleston books, in my opinion. I also like 2 1/4, which is beautifully printed from Twin Palms publishersw. For Faulkner addicts (like me), Faulkner's Mississippi with essay by Willie Morris is enjoyable.