Box 4

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.

Sixteen letters from Mary Cassatt to her brother, Alexander J. Cassatt.

Fourteen letters from Mary Cassatt to her sister-in-law, Lois Buchanan Cassatt. This folder also contains letters from Mary Cassatt to her nephew, Edward Buchanan Cassatt, and niece, Emily (Mrs. Edward B. Cassatt).

Eight letters from Alexander J. Cassatt to his wife, Lois Buchanan Cassatt. This folder also contains one letter from Gardner Cassatt to his brother, Alexander J. Cassatt.

Twenty-two photographs of paintings by Federico Castellón from Carl Zigrosser's files.