Box 4a

Introduction to Cassatt material, geneaology, and will of Mary Cassatt.

Fifty-seven letters from Robert Simpson Cassatt (father of Mary Cassatt) to his son, Alexander J. Cassatt.

Copies of fifty-seven letters from Robert Simpson Cassatt (father of Mary Cassatt) to his son, Alexander J. Cassatt.

Nine letters from Robert Simpson Cassatt to his daughter-in-law, Lois Buchanan Cassatt. This folder also contains 14 letters from Robert Simpson Cassatt to his grandchildren, Edward, Katharine, Robert, and Elsie.

Twenty-four letters from Katherine Kelso Johnston Cassatt (mother of Mary Cassatt) to her son, Alexander J. Cassatt.

Nine letters from Katherine Kelso Johnston Cassatt to her daughter-in-law, Lois Buchanan Cassatt. This folder also contains 14 letters from Katherine Kelso Johnston Cassatt to her grandchildren, Edward, Katharine, Robert, and Elsie.