Hardware merchandising (January-March 1908) . H & R SINGLE GUN, MODEL 1900. Automatic and Non-ejecting-. 12, 16 and 20 gauges, plain steel barrels ; 12 and 16gauges also with twist barrels.
Upland Pursuits: A Brief History of the H&R Topper Model 158 – Palouse Upland Media
The Harrington and Richardson Single Shot 20 Gauge Shotgun - SkyAboveUs
Lot - Antique c. 1900 Harrington & Richardson Single Shot 16 Gauge Shot Gun
Harrington & Richardson 1900 - For Sale :: Guns.com
Lot 152: Group of six shotguns to include Harrington and Richardson model 1900, single shot, 12 gauge shotgun, 29 7/8 barrel, s/n 117472 tw... - Nadeau's Auction Gallery
Identifying an old H&R top break | Shotgun Forum
Harrington & Richardson Model 1900 .24 Ga Single Shot Break Action Shotgun w/ 30" bbl [ blued finish