_references Bolas, Bernard. A Handbook of Laboratory Glass-Blowing; Volume 2. Franklin Classics, 2018. [outbound link to E-Book]Walas, Joe. “The Scientific Glassblowing Learning Center.” [outbound link to website]Hopman, Rebecca. “Steam Engines.” Gathering A Crowd, 2020. [outbound link to E-Book]Dunham, Bandhu Scott. Contemporary Lampworking: A Practical Guide to Shaping Glass in the Flame (Volume I, II and III) Third Edition. 3rd ed., Salusa Glassworks, 2003.