*[[Jaques, George]], February 1851, “Trees in Cities” (''Magazine of Horticulture'' 17: 50–52) <ref>George Jaques, “Trees in Cities,” ''Magazine of Horticulture, Botany, and All Useful Discoveries and Improvements in Rural Affairs'' 17, no. 2 (February 1851): 50−52, [https://www.zotero.org/groups/54737/keywords_in_early_american_landscape_design/items/itemKey/87A6ZJSH/q/trees%20in%20cities view on Zotero].</ref>
:“I propose, at present, to speak first of planting trees upon side-'''walks'''. In American cities, it is customary to construct streets with a wide carriageway in the middle, and a ''walk'' for pedestrians on either side. Trees are usually planted on the line between these foot-'''walks''' and the carriageway. . . .
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