Story Credits:

Authors: Jeff Silverman and Charles Hardy III, West Chester University, with the assistance of and contributions by Marie Denlinger, and Behind the Marker essays by Dennis Downey, Steven Gimber, William Kashatus, Thomas J. Misa, William Pencak,and Gabrielle Stitz.

Captions: Charles Hardy III, West Chester University, with the assistance of Marie Brown Wilson

Digital Rights, Image Research, and Preparation: Marie Brown Wilson with the assistance of Charles Hardy III. Image research assistance: Marie Denlinger.

Digital Content Ingestion: Marie Brown Wilson and Bill Wilson

Lesson Plans:
Lesson Plan Coordinator: Carrie Curtis Iams

Elementary School:
Stephen Foster and the Election of 1856, by Jeff Nolt

Middle School:
The Birth of the American Cowboy and the Western Genre, by Carrie Curtis Iams

High School:
Dangers in the Work Place, by Cindy Greene

Video:

Audio:
Center for American Music, University of Pittsburgh.
Dear Friends Ensemble for American Music, Pittsburgh, PA, concert, Smithsonian Institution, Baird Auditorium, 1988.

Additional credits:
Academy of Achievement
Academy of Natural Sciences, Ewell Sale Stewart Library
Accessible Archives
Allegheny College Archives and Special Collections, Pelletier Library
American Antiquarian Society
American Philosophical Society
Atwater Kent Museum of Philadelphia
Banning Repplier
Bill Layne Wilson
Boston Public Library, Print Department
Brigham Young University, LDS Church Archives
Bryn Mawr College, Special Collections Department
Bucks County Historical Society, Spruance Library
Capitol Preservation Committee
Catholic University of America, Department of Archives, Manuscripts, and Museum Collections
Carnegie Library of Pittsburgh
Carnegie Museum of Art
Casey Edwards
Chatham University, Jennie King Mellon Library, Pittsburgh, Pa.
Chautauqua Institution Archives
Chemical Heritage Foundation Image Archives, Chemists’ Club Collection
Chester County Historical Society
Chestnut Hill Historical Society and the Philadelphia Cricket Club
Cheyney University of Pennsylvania
City of Philadelphia Department of Records: Department of Records Archives
City of Philadelphia Mural Arts Program
Colgate Rochester Crozer Divinity School
Corbis-Bettmann
Cornell University, Kheel Center
Cumberland County Historical Society
Curtis Institute of Music
Dear Friends Ensemble for American Music, Pittsburgh, PA
Department of Environmental Protection, Commonwealth of Pennsylvania
Dickinson College Archives and Special Collections
Dr. Adam Stuart Smith, www.plesiosauria.com
Drake Well Museum, PHMC Bureau of Historic Sites and Museums
Drexel University, College of Medicine, Archives & Special Collections
Duquesne University Archives
Duke University, Rare Book, Manuscript, and Special Collections Library, Historical American Sheet Music
Duke University Rare Book, Manuscript, and Special Collections Library, Hartman Center for Sales, Advertising & Marketing History
Duquesne University Archives
Edinboro University Archives
Ephrata Cloister, Pennsylvania Historical and Museum Commission
Erie County Historical Society
Estate of Bayard Rustin
Fairmount Park Art Association
Franklin and Marshall College, Shadek-Fackenthal Library
Free Library of Philadelphia
Friends of the Kotzschmar Organ
Gilder Lehrman Center for the Study of Slavery, Resistance, and Abolition http://www.yale.edu/glc/
Greg Grieco
Hall-Mack Company
Harvena Richter
Haverford College Library, Haverford, PA, Quaker Collection,
Historical Society of Pennsylvania
Historical Society of Western Pennsylvania
Historical Society of York County
Independence National Historical Park
International Ladies' Garment Workers' Union
James A. Michener Art Museum.
Jefferson College Archives
John Mosley Collection, Courtesy Charles L. Blockson Afro American Collection, Temple University
John O'Hara Trust
John Rudy Photography, http://www.johnrudy.com
Joyce M. Tice, Tri-Counties Genealogy and History
June Sturgis
Kim M. Ross
Lancaster County Historical Society
Lafayette College, David Bishop Skillman Library, Department of Special Collections & College Archives
Lafayette College Art Collection, Kirby Collection of Historical Paintings, Easton, Pa.
La Salle University, Connelly Library, Wister Family Special Collection
Laura C. Kelley, photographer
Lehigh University, Linderman Library Special Collections
Leroy Forney
Library Company of Philadelphia
Library of Congress
Linden Hall, Lititz, Pa.
Literary Estate of Marianne C. Moore
Little Red Schoolhouse, Shippensburg University
Lower Saucon Township Historical Society
Martin d'Arcy
Martin Tetloff
Matthew K. Gardzina
Maxilla and Mandible, Ltd., New York
Metropolitan Museum of Art
Miami University Libraries
Middlebury College, Middlebury, Vermont, Media Archives, Special Collections
Millersville University, Helen A. Ganser Library, Archives and Special Collections
Missouri Historical Society Archives, Clark Papers
Moravian Archives
Moravian Archives, Herrnut, Germany
Moravian Historical Society
Mt. Gretna Area Historical Society
National Afro-American Museum and Cultural Center, Wilberforce, Ohio
National Archives
National Oceanic and Atmospheric Association, United States Department of Commerce
National Park Service, Jefferson National Expansion Memorial
National Portrait Gallery, Smithsonian Institution
National Portrait Gallery, St. Martin's Place, London
New Directions Publishing
New York Historical Society
New York Public Library, NYPL digital gallery
New York University, Tamiment Playhouse Photographs Collection, Tamiment Library
Nicholas A. Tonelli
Nobel Foundation
Palacio de Bellas Artes, Mexico City, Mexico
Palmer Museum of Art
Pelletier Library, Allegheny College
Pennsylvania Academy of the Fine Arts
Pennsylvania Bureau of Historic Preservation
Pennsylvania Heritage Magazine
Pennsylvania Historical and Museum Commission
Pennsylvania Hospital Historic Collections, Philadelphia
Pennsylvania State Archives Collections and Staff
Penn State Department of Public Information
Pennsylvania State Museum Collections and Staff
Pennsylvania State University Museums, Libraries, and Archives
Philadelphia College of Pharmacy, University of the Sciences in Philadelphia
Philadelphia History Museum at the Atwater Kent, The Historical Society of Pennsylvania Collection
Philadelphia Museum of Art
Pittsburgh Post Gazette
Prince Gallitzin Chapel House, Tomb Site, and St. Michael's Basilica
Princeton University Art Museum
Princeton University Library
Project Gutenberg Archives
Richard's Free Library, Newport, New Hampshire
Robert M. Bird
Robert Shetterly
Roland Swain Co.
Ronald C. Yochum, Jr.
Rosenbach Museum and Library
Schoenberg Center for Electronic Text and Image online project from the University of Pennsylvania
Scranton State School for the Deaf
Sen. John Heinz History Center
Shippensburg University
Smithsonian Institution Archives
Smithsonian Archives of American Art, Macbeth Gallery Records
Smithsonian American Art Museum
Smithsonian Institution, National Museum of American History: Archives Center
Spring-Ford Area Historical Society
State Library of Pennsylvania
Susan Kane
Susquehanna University
Swarthmore College, Friends Historical Library
Ted Daeschler, Academy of Natural Sciences
Temple University Libraries, Special Collections
Terrence Moore
The Right Hon. The Earl of Derby
Tindley Temple United Methodist Church Philadelphia, PA
Thomas Jefferson University Archives
Tom Murphy VII
United States Senate
University of Chicago Library/Library of Congress, Collections Research Center
University of Minnesota Libraries, History Archives
University of Pennsylvania Art Collection, Philadelphia, Pennsylvania.
University of Pennsylvania, University Archives and Records Center
University of Pennsylvania, Rare Book and Manuscript Library
University of Pittsburgh Archives, Archives Service Center
University of Pittsburgh, Allegheny Observatory
University of Pittsburgh. Center for American Music,
University of Pittsburgh, Darlington Collection, Special Collections Department
University of Scranton, Weinberg Memorial Library
University of Virginia Library, Clifton Waller Barrett Library of American Literature, Special Collections
University of Wyoming, American Heritage Center, Owen Wister Collection
Upper Delaware Scenic and Recreational River, National Park Service, Zane Grey Museum
Urban Archives: Temple University, Philadelphia, Pa
Viking Penguin, a division of Penguin Group (USA) Inc
Villanova University Archives, Villanova Pennsylvania
Vincent Cianni
Walter Havighurst Special Collections, Miami University Libraries, Oxford, Ohio
Washington and Jefferson College, The Learned T. Bulman '48 Historic Archives and Museum
Watch Tower Bible and Tract Society of Pennsylvania
West Virginia University Libraries
Western Historical Manuscript Collection-Columbia, Missouri
White House Historical Association (White House Collection)
William Holmes McGuffey Museum, King Library, Miami University
Winterthur Museum
Wilson College, C. Elizabeth Boyd ’33 Archives, Hankey Center
WQED Pittsburgh
Wylie Agency
Yale University, James Weldon Johnson Memorial Collection, Beinecke Rare Book and Manuscript Library
Yale University, H.D. Papers. Yale Collection of American Literature, Beinecke Rare Book and Manuscript Library