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USCGC Mackinaw on Icebreaking Mission

Credit: USCG
article: Christmas Tree Ship of Chicago 		Other images from this article
Volunteers Unload Trees from the Deck of Mackinaw 1,000 Trees Arrive in Chicago Volunteers Stack Trees for Distribution USCGC Mackinaw (WLBB-30) USCGC Mackinaw on Icebreaking Mission
USCGC Mackinaw on Icebreaking Mission, USCG