1910 Graduates from Colorado Agricultural and Mechanical College at Ft. Colins with a Bachelors of Science in Horticulture and Entomology.
1910 Hired as assistant to State Entomologist. Horticulture Inspector in Mesa County, Colorado.
1913 Spring begins work on Cranberry Pests USDA
1914 August ACGA Convention at Whitesbog, N.J. H. B. Scammell presents study results on the Blackhead Fire Worm, the Girdle Worm and the New Root Worm.
1916 February - The Cranberry Insect Laboratory Of The Bureau of Entomology, formerly at Pemberton, N.J. , In Charge of Mr. H. B. Scammell, has been transferred to Brown's Mills, N.J.
1916 August 26 ACGA Convention - A New Method Of Controlling The Blackhead Fireworm,
H. B. Scammell, Entomological Laboratory, USDA, Browns Mills, N.J.
H. B. Scammell based at Whitesbog according to 1917 article by Elizabeth C. White
1917 H.B. Scammell uses Government Automoble to get around for Cranberry Investigations.
1917 January 27 ACGA Annual Meeting - The Fall Army Worm, Laphygma frugiperda S. & A., In Its Relation To Cranberry Bogs. H. B. Scammell, Entomological Laboratory, USDA, Toms River, N.J.
1917 February - Amphiscepa bivittata say, in its relationship to cranberry, By H. B. Scammell, Entomological Assistant, Deciduous Fruit Insects Investigations
1917 September - The Cranberry Girdler, By H. B. Scammell, Entomological Assistant, Deciduous Fruit Insects Investigations
1917 December - Cranberry Insect Problems And Suggestions For Solving Them,
By H. B. Scammell, Entomological Assistant, Deciduous Fruit Insects Investigations
1923 August WSCGA - Address, Dr. H. B. Scammell, of the Double Trouble Company, Inc, Toms River, N.J.
1924 - C. S. Beckwith describes the Research Laboratory at Double Trouble
Map of Double Trouble with Research Laboratory Building Identified.
1930 August 12, Wisconsin State Cranberry Growers Assoc., Cranberry False Blossom From The Viewpoint Of The Growers , H. B. Scammell
1931 USDA, Division of Botany, Blueberry Investigations, H. B. Scammel In Charge
1931 USDA U.S. Cranberry and Blueberry Disease Field Laboratory on the property of Double Trouble Co., R. B. Wilcox, associate pathologist In Charge.