[XI-25] Sedelmair, Relacion, in Doc. Hist. Mex., série iii., tom. iv., p. 847. There is no foundation whatever for the statement of Mofras that in this region 'en faisant des fouilles on trouve encore des idoles, des poteries, des armes, et des miroirs en pierre poli nommées itzli.' Explor., tom. ii., p. 361.
[XI-26] Velarde, in Doc. Hist. Mex., série iv., tom. i., p. 363.
[XI-27] Sedelmair, Relacion, in Doc. Hist. Mex., série iii., tom. iv. p. 847.
[XI-28] Velarde, in Doc. Hist. Mex., série iv., tom. i., pp. 348, 363. 'De otros edificios de mas extencion, arte y simetria, he oido referir al Padre Ygnacio Xavier Keller, aunque no tengo presente en que paraje de sus Apostolicas carreras.' Sonora, Rudo Ensayo, pp. 19-20.
[XI-29] Emory's Reconnoissance, pp. 87-8, 134; Johnston, in Id., p. 600; Cincinnatus' Travels, p. 356.
[XI-30] Whipple, Ewbank, and Turner, in Pac. R. R. Rept., vol. iii., pp. 45, 47.
[XI-31] Bartlett's Pers. Nar., vol. ii., pp. 242-8, with a cut of one of the heaps of ruins. Möllhausen, Tagebuch, pp. 308-9. Cuts of many specimens of pottery from the Gila Valley, in Johnston, in Emory's Reconnoissance, pp. 596, 600.
[XI-32] Whipple, Ewbank, and Turner, in Pac. R. R. Rept., vol. iii., pp. 14-15.
[XI-33] Mr Leroux also reported to Bartlett the existence in the Verde valley of heaps of débris like those on the Salado. Bartlett's Pers. Nar., vol. ii., p. 247. Mention of Verde remains. Warden, Recherches, p. 79; Möllhausen, Reisen in die Felsengeb., tom. ii., pp. 140-2; Mühlenpfordt, Mejico, tom. ii., pt. ii., p. 538. Pike, Explor. Trav., p. 336, says very absurdly, "Those walls are of a black cement which encreases in stability with age, and bids defiance to the war of time; the secret of its composition is now entirely lost."
[XI-34] Whipple, in Pac. R. R. Rept., vol. iii., pp. 91-4; Möllhausen, Tagebuch, pp. 348-9. Möllhausen was the artist connected with Whipple's expedition.