Page:Popular Science Monthly Volume 81.djvu/533

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Fig. 3. Symbols foe the Spanish Dollar or Peso, traced from MS. letters, contracts and account-books. No. 1. The historian, Dr. Cayetano Coll y Toste, of Porto Rico, says that this was the written symbol "during the time of Christopher Columbus." Nos. 2, 3, 6, 9, 10, 11, 13, 14, 17, 20 are traced from MSS. owned by W. W. Blake, Avenida 16 de Septiembre 13, Mexico City. Nos. 15, 16, 18, 19 are from Draper Coll. in Wis. Hist. Libr., Madison; Nos. 15, 16 in Clark MSS., Vol. 48 J, pp. 37, 38; Nos. 18, 19 in Clark MSS., Vol. 1, pp. 136, 143. Nos. 4, 5, 7, 8, 12 are from the Ayer Coll. Newberry Libr., Chicago. No. 21 from letter of Robt. Morris to the Hon. Jeremiah Wadsworth, Esq., Hartford, Conn., in Harper Mem. Libr., University of Chicago. Nos. 22, 23, 24, 25, 26, 27, 28, 29, 30 are from MSS. in Chicago Hist. Soc. Libr.; No. 22 in Menard Coll., Vol. 64; Nos. 23, 24 in Menard Coll., Vol. 60, p. 187; Nos. 25, 30 in Autogr. Letters, Vol. 61; No. 26 in Menard Coll., Vol. 62; Nos. 27, 29 in Menard Coll., Vol. 63; No. 28 Autogr. Letters, Vol. 71, p. 76.