In Senate of the United States, January 23d, 1800 . Ordered, that the memorial of the Connecticut Academy of Arts and Sciences; also, the memorial of the American Philosophical Society, communicated on the 10th instant, be printed for the use of Senate.

The Tovar calendar : an illustrated Mexican manuscript ca. 1585 / reproduced, with a commentary and handlist of sources on the Mexican 365-day year, by George Kubler and Charles Gibson.

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The Tovar calendar : an illustrated Mexican manuscript ca. 1585 / reproduced, with a commentary and handlist of sources on the Mexican 365-day year, by George Kubler and Charles Gibson.