I am very interested in the Coast Artillery guns at Fort Wadsworth on Staten Island, New York.
Ms. Hulkower,
Here is some good information on the types of guns and artillery that were used.
http://www.fortwiki.com/Fort_Wadsworth_(1)
http://dmna.ny.gov/forts/fortsT_Z/wadsworthFort.htm
http://dmna.ny.gov/forts/fortsQ_S/richmondFort.htm
https://en.wikipedia.org/wiki/Fort_Wadsworth
https://www.nps.gov/gate/learn/historyculture/wasworth1907-45.htm
https://www.northamericanforts.com/East/nycity3.html#harbor
hope this helps,
Elliot