A list of Halladay models from the Carfolio.com technical specifications database. https://www.carfolio.com/halladay/7192/rss/ en-gb Mon, 2 Jan 2012 Full specifications of 1910 Halladay G-10 24-28 hp Mon, 2 Jan 2012 https://www.carfolio.com/halladay-g-10-24-28-hp-260733 https://www.carfolio.com/halladay-g-10-24-28-hp-260733 Full specifications of 1921 Halladay Manhattan Sun, 1 May 2010 https://www.carfolio.com/halladay-manhattan-213840 https://www.carfolio.com/halladay-manhattan-213840 Full specifications of 1907 Halladay 35-40 hp Fri, 6 Oct 2009 https://www.carfolio.com/halladay-35-40-hp-206701 https://www.carfolio.com/halladay-35-40-hp-206701