Jim Driscoll, historian at the Queens Historical Society and a longtime advocate of the historical importance of 227 Duffield, pointed out that Ralph Waldo Emerson wrote about Thomas Truesdale, previous owner of 227 Duffield. Here is a quote from Emerson's journal from 1847 (pages 332-333):
Emerson was one of the most prominent American intellectuals of the time. He was one of the greatest spokesmen against slavery, and Mr. Driscoll thinks this passage might possibly indicate the attendees of an Underground Railroad meeting.