Map of Maryland Showing the Natural Resources of the CountiesMaryland Invites You. Good Homes Easily Acquired

Chicago citation style
State Horticultural Department, Maryland Agricultural College, Maryland Geological Survey. Map of Maryland Showing the Natural Resources of the Counties,Maryland Invites You. Good Homes Easily Acquired. 1907. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~290781~90062377. (Accessed December 10, 2018.)
APA citation style
State Horticultural Department, Maryland Agricultural College, Maryland Geological Survey, (1907) Map of Maryland Showing the Natural Resources of the Counties,Maryland Invites You. Good Homes Easily Acquired. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~290781~90062377
MLA citation style
State Horticultural Department, Maryland Agricultural College, Maryland Geological Survey. Retrieved from the Digital Public Library of America <https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~290781~90062377>.
Note: These citations are programmatically generated and may be incomplete.