 The widened-street style was a hallmark of Hagstrom's product line; although it added clarity in navigation and labeling, the widened streets borrowed their space from the surrounding blocks, in some cases reducing them to slivers; for instance, the Flatiron Building appeared as "a speck where Broadway and Fifth Avenue converge".Hagstrom also produced the "redlining" maps of New York City in 1938.From 1941 to 2002, all of Hagstrom's New York City maps were based on a single master map that was updated by hand.