Recherche dans la collection - Royal Observatory records [textual record, cartographic material]

Cartographic material: "Surveyed in 1840 & 1841 under the direction of Major J.D. Graham, U.S. Top. Engineers, one of the commissioners for surveying and exploring the N.E. Boundary of the U.S. under Act of Congress of July 20th 1840. To accompany Doc. No. 31, House of Representatives, 27th Congress, 3rd Session." Forwarded in 1844 by Major Graham to the Astronomer Royal, Professor G.B. Airy, for professional advice on technical points relating to the survey. Item includes annotations by J.D. Graham.

Title is based on the contents of the sub-sub-series.

The records were accumulated by the Astronomer Royal, Professor Airy, whose professional advice was frequently sought on technical points relating to the survey. The records were presented to Canada by the Royal Observatory (Greenwich) and placed in the custody of the Chief Astronomer in 1898. The records were carried forward into the Dominion Astronomical Observatory after its creation. While the material was held by the Observatory, it was organized by the alpha-numeric system (ie: 1D, 2D ... 17D). In 1934, the documents were transferred to the then Public Archives of Canada.

Profile was transferred from G.A.D. RG 48, Series AI 1.(a), Vol. 19, file ID, page 302.

No further accruals are expected.