I am a buyer of maps, atlases, color plate books, natural history watercolors - Arader Galleries has the largest stock in the world in all of these categories.

What I bought today at Sothebys NYC today in their rare book and map sale.  Let me know if anything is of interest.  Graham Arader in Books sale N09885 - June 28 2018
Lot	Description	hammer	aggregate
132	Cram, George F. 9 maps of Oklahoma and Indian Territories. Chicago: 1888-1895	1,000	1,250
133	Delisle, Guillaume. Carte du Mexique et de la Floride. Paris: 1703	4,000	5,000
134	Delisle, Guillaume. Carte de la Louisiane et du Cours du Mississipi. Paris: 1718	6,000	7,500
139	Humboldt, Alexander von. Carte Generale du Royaume de Nouvelle Espagne. Paris: 1811-1812	9,500	11,875
141	(Indian Territories and Reservations). Four 19th- or early 20th-century maps of Indian Territories and in the U.S.	2,400	3,000
142	Jefferys, Thomas. The Western Coast of Louisiana & The Coast of West Florida and Louisiana. London: 1775	1,700	2,125
143	Jefferys, Thomas. The American Atlas. London: 1776	30,000	37,500
145	La Harpe. Manuscript map of Carte nouvelle de la partie de l'ouest de la Louisianne. Paris: 1722-1725	480,000	591,000
146	Lattré, Jean. Carte des Etats-Unis de l'Amerique suivant le Traité de Paix de 1783. Paris: 1784 [but ca. 1792]	4,500	5,625
147	[Lindbergh, Charles]. Rand McNally map of Oklahoma, signed by him and used in flight. [Chicago: ca. 1920–1930]	3,200	4,000
150	Lopez. La Luisiana cedida al Rei N. S. por S. M. Christianisima, con la Nueva Orleans. Madrid: 1762	6,000	7,500
153	Mercator, Rumold. Orbis terrae compendiosa description. Duisburg: 1595 or later	2,600	3,250
154	Moll. A New and Exact Map of the Dominions of the King of Great Britain on ye Continent of North America. London: 1715	10,000	12,500
156	[North America]. Five nineteenth-century maps of North America or portions thereof	3,000	3,750
162	Purchas, Samuel. Purchas His Pilgrimes [with] Purchase his Pilgrimage, London: 1625-1626. 5 vols	20,000	25,000
	Total	583,900	720,875