She is possibly Mrs. Alexander E. Christie. She was active during the period 1867-1869. She exhibited one painting at the Boston Athenaeum in 1867 (Towing a Disabled Brig). She exhibited at the Pennsylvania Academy of the Fine Arts in 1867, 1868 (#136 – Mount Washington), and 1869. Her address was given as Chestnut Street which we believe to be in Philadelphia, PA.

Below is a notice of her in the Philadelphia Press, Tuesday, 15 March 1870, p. 2, column 2:

“Mrs. E. A. Christie.
The pleasant, sunny room occupied as a studio by this talented lady-artist, contain a wealth of admirable coast scenes and landscape pictures, all the offspring of her own busy pencil. ‘Remiscence of the White Mountains,’ 14″ by 22″ inches is one of the best of these recently finished. The roseate hue characteristic of a summer sky just after sunset is very truthfully depicted. The herbage and stones of the foreground are accurately and graphically delineated, and a rich warm coloring lights up the whole picture with a very pleasing effect. ‘View near Gloucester, Mass,’ same size, is superior in some respects to the last. Its main features are a bold rocky point overlooking a placid sea, with a road plainly outlined over the brow, upon which is shown a heavy cart, drawn by a yoke of oxen. The foreground is exceedingly natural and vivid. Mrs. Christie’s pictures are all remarkable for strength and accuracy of detail. Many artists of the sterner sex fall below her in these very important essentials. At the same time, she invests most of her paintings with a halo of happy poetical effect which marks the true inspiration of genius. ‘Clambake on the Coast of Maine’ is the significant name of a very expressive and forcible picture, which has more beauties and merits than we have space to record. A steep, lofty cliff in the distance, rising abruptly from the sea, is very strongly drawn, and is one of its best features.

Two of this lady’s finest pictures, however, are to be seen at Messrs. Potter and Coates’. These were originally painted early in last year, and were unfortunately in the galleries of Messrs. Earle last summer when so large a number of their fine collection were destroyed by fire. The pictures referred to, ‘Mount Washington,’ and ‘Coast of Maine,’ having been among the victims of the flames, Mrs. Christie promptly determined to reproduce them from the studies still in her possession. She was happily successful, and the duplicates are even finer works than the originals. She has now upon her easel a picture representing another scene on the Maine coast. It is nearly finished, and thus far executed in her usual vigorous style.”

References
New Hampshire Scenery
David G. Wright