These are some links that you may find interesting or helpful. Check them out!
This company is owned by a friend of mine and sells mortars for shooting display fireworks and also builds racks.
This company is owned by a friend of mine and does firework displays in the Franklin, Oil City, Pennsylvania area.
This is a cool place to go to learn about the first oil drilling operations in Pennsylvania. They do shows for school groups using some of my pyrotechnics.
This race team is owned by a friend of mine who shoots displays for Cartwright Fireworks linked above.
This is a very large fireworks club made up of professionals and amateurs alike. Every year they have a convention somewhere in the US. Once you go to one you will never miss another unless you die.
www.pgi.org