August 8, 2017
Canadian arborist Warren Hoselton as Professor Elwood Pricklethorn explains the value of trees to the environment.
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![Tease photo](http://connection.media.clients.ellingtoncms.com/img/photos/2017/08/08/p080917-602_r100x80.jpg?144a9619b7b2d55e12d8b619b3e5adb91a2095fa)
Raising Awareness of Need for Tree Research
Canadian tree expert stops at Potomac Library disguised as Professor Elwood Pricklethorn.
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