Author
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Nichols, Rose Standish
1
Northern Ireland Tourist Board
1
Penn, William, 1644-1718
1
Pennsylvania Academy of the Fine Arts
1
Pennsylvania Historical and Museum Commission
1
Pennsylvania Horticultural Society
2
Pennsylvania Horticultural Society (Philadelphia)
1
Perkins, Hazelhurst Bolton
1
Philadelphia Fairmount Park Commission
1
Robinson, W. 1838-1935
1
Shepard, Charles Upham, 1804-1886
1
Site and Relic Society of Germantown (Philadelphia, Pa.)
1
Slosson, Elvenia
1
Thayer, Russell
1
Thomas Edison & Henry Ford Winter Estates, Inc
1
Thomas Jefferson Memorial Foundation
1
Tinkcom, Margaret Lee Bailey
1
Treese, Lorett, 1952-
1
United States George Washington Bicentennial Commission
1
United States Sanitary Commission
1
University of Pennsylvania. Morris Arboretum
1
Vizcaya Museum and Gardens (Miami, Fla.)
1
Welcome Society of Pennsylvania
1
Wilkinson, Norman B.
1
Woodlands Cemetery (Philadelphia, Pa.)
1
Woodward, E. M.
1
Wright, Letitia Ellicott, "Mrs. William Redwood Wright."
1
Wyck Association (Philadelphia)
1