Sheet of stamps including John Frederick Peto's Old Time Letter Rack

Chicago citation style
Sheet of stamps including John Frederick Peto's Old Time Letter Rack. 1974. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_6598&repo=DPLA. (Accessed December 19, 2018.)
APA citation style
(1974) Sheet of stamps including John Frederick Peto's Old Time Letter Rack. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_6598&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_6598&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.