L-R row 1: Robert Hazelett, Michael Heastan, William Heath, William Heath. Row 2: William Heath, Donald Heck, Donald Heck, Bryan Heckman. Row 3: Thomas Heckman, Thomas Heckman, Thomas Heckman, John Heidenreich, Row 4: Thomas Heidenreich, Thomas Heidenreich, Thomas Heidenreich, Gilbert Heim

Chicago citation style
L-R row 1: Robert Hazelett, Michael Heastan, William Heath, William Heath. Row 2: William Heath, Donald Heck, Donald Heck, Bryan Heckman. Row 3: Thomas Heckman, Thomas Heckman, Thomas Heckman, John Heidenreich, Row 4: Thomas Heidenreich, Thomas Heidenreich, Thomas Heidenreich, Gilbert Heim. Retrieved from the Digital Public Library of America, http://contentdm.acpl.lib.in.us/cdm/ref/collection/coll3/id/3462. (Accessed July 17, 2018.)
APA citation style
L-R row 1: Robert Hazelett, Michael Heastan, William Heath, William Heath. Row 2: William Heath, Donald Heck, Donald Heck, Bryan Heckman. Row 3: Thomas Heckman, Thomas Heckman, Thomas Heckman, John Heidenreich, Row 4: Thomas Heidenreich, Thomas Heidenreich, Thomas Heidenreich, Gilbert Heim. Retrieved from the Digital Public Library of America, http://contentdm.acpl.lib.in.us/cdm/ref/collection/coll3/id/3462
MLA citation style
Retrieved from the Digital Public Library of America <http://contentdm.acpl.lib.in.us/cdm/ref/collection/coll3/id/3462>.
Note: These citations are programmatically generated and may be incomplete.