This Madam Alexander doll is in my doll collection. Acquired 2002.
The doll on the right is a Harriet Lane doll by Suzanne Gibson. She created a series of First Lady dolls for the Smithsonian
Some of these are Nortel Presidential Lady dolls offered on Ebay October 2002. The doll in the middle is probably Harriet Lane. To the extreme left is probably Garfield, then Lincoln, and on the right Polk.
This is a post card picture of the ship named after Harriet Lane

Harriet Lane

Harriet Lane Letters: Library of Congress
White House Information on Harrket Lane:
National First Ladies Library:
Contenporary newspaper articles about Harriet Lane:
Suite item on Harriet Lane:
Amazon link to Harriet Lane Biography: Harriet Lane First Lady of the White House by Mary H. and Sandra V Monroe Shelley. October 1980
James Buchanan White House biography: