----------------------------Original message---------------------------- I am hoping that there is someone on the list whose knowledge of historical sources might help on a user query... I have a user who is interested in establishing a date for a map in one of our collections. The title of the map is: "Map showing the line of boundary between the US. and British possessions, from the point where the 49th parallel of N. latitude strikes the Western coast of the continent "to the middle of the channel which separates the continent from Vancouver's Island and thence southerly through the middle of said channel" etc. to Fuca's Straits, in accordance with Treaty of June 15th, 1846 " and is marked as being litho'ed by Bowen and Co., Philadelphia. In Penfold's "Maps and Plans in the Public Record Office. v.2: America and West Indies, there is an item listed which may be the map in question [Item #429, p 81, dated 1871]. However Penfold's notation reverts to ellipsis after the words " ... British Possessions .... " in the title, so the user is not absolutely sure that this is the same map we have in the collection. My query would be whether anyone has access to the CIS US Serial Set Index and Carto-Bibliography of Maps, 1789-1969, and whether the user could get confirmation from this source for the date of the map? A photocopy of the entry for this map, if found in one of the volumes of the index/carto-bib, would also be useful. With thanks, Elizabeth Elizabeth Hamilton UNB Libraries P.O. Box 7500 Fredericton, N.B. Canada E3B 5H5 Tel: 506-453-4970 E-Mail: [log in to unmask]