The first link below has more about the various Gerrish shops around Bangor. He appears to have moved from the Broad Street address to the corner of Exchange and Hancock streets by 1889. Many versions of this book were published starting in 1879. Scanned copies are available from a variety of sources online as shown at the other links below. Good find,
It had always surprised me that Evan H. Gerrish had been able to jump from the woods near Moosehead lake directly to a prime commercial address in the heart of downtown Bangor, Maine in the early 1880s. However, this location was well covered by the Sanborn Insurance maps so they can provide some insights into how his business changed over the years.
His first Maine Register listing was in 1881 under the "Fishing Tackle" heading as "GERRISH E. H., 18 Broad. Manufacturer Fine Rods, Canvas Canoes, Paddles &c." His heading had been expanded to "Fishing Tackle and Canoe...