1819 MESSAGE FROM THE PRESIDENT (1ST SEMINOLE WAR) https://play.google.com/books/reader?id=5YFHAQAAIAAJ&printsec=frontcover&output=reader&hl=en&pg=GBS.PA59

1818 CONSTRUCTION OF FT. GAINES https://books.google.com/books/reader?id=Y5YbAQAAMAAJ&printsec=frontcover&output=reader&pg=GBS.PA827

1836 account of expenditures on fort on D.I.  https://books.google.com/books?id=LEcPAAAAYAAJ&pg=RA3-PA3075&lpg=RA3-PA3075&dq=%22fort+on+dauphin+island%22+1817&source=bl&ots=Ye-8Zqfhg3&sig=k_wZzazlJ4sWf3O_-speuyv5tvY&hl=en&sa=X&ved=0ahUKEwi8lP6Z647OAhXTdSYKHdx_D9AQ6AEIOzAH#v=onepage&q=%22fort%20on%20dauphin%20island%22%201817&f=false

Israel Ketchum lawsuit  https://books.google.com/books?id=tK0KAAAAYAAJ&pg=RA5-PA45&lpg=RA5-PA45&dq=%22fort+on+dauphin+island%22+1818&source=bl&ots=vDTleo4KGr&sig=jMh6MiLmJYGBj2Y8qzkgq8xLO0U&hl=en&sa=X&ved=0ahUKEwj4oMXT7Y7OAhVDcz4KHUFaBDoQ6AEILzAD#v=onepage&q=%22fort%20on%20dauphin%20island%22%201818&f=false

history of fort contract  https://books.google.com/books?id=h4pHAQAAIAAJ&pg=RA4-PA69&lpg=RA4-PA69&dq=%22fort+on+dauphin+island%22+1818&source=bl&ots=73B99AyF4w&sig=ujVTIgUBZ_nVLY8ysE7o1yw9t0I&hl=en&sa=X&ved=0ahUKEwj4oMXT7Y7OAhVDcz4KHUFaBDoQ6AEIQzAJ#v=onepage&q=%22fort%20on%20dauphin%20island%22%201818&f=false

Yale College bio for James Gadsden  https://books.google.com/books?id=jKZGAQAAMAAJ&pg=PA29&lpg=PA29&dq=%22gulf+frontier%22+1818&source=bl&ots=XfpRizBh09&sig=Szg6aNoTuA75zXgwC9jLLQz0xnk&hl=en&sa=X&ved=0ahUKEwiihr31p5HOAhUG0iYKHWaIBPoQ6AEIMTAG#v=onepage&q=%22gulf%20frontier%22%201818&f=false