The Yellow Water Weapons complex began in 1959 rising up from a former gunnery range. The excerpt form a 1961 issue of Leatherneck magazine confirms this and answers many questions I had about this facility. Note the picture of raising of the colors at the admin building. The flag had 48 stars! Perhaps they had not yet received the 50 star flags as Alaska and Hawaii were admitted to the Union in 1959.

Leatherneck Magazine Cover June 1961	Raising the colors	Lance Corporal W.L Shubert controls vehicle patrols from the Guard Shack	The Basketball team Coached by Lt. Raiselis, won the Cecil Field intramural championship	Daily Volleyball matches are played between teams made up of guard and office personnel. The barracks team finished second in Cecil Field Competition.
The Air Conditioned mess hall was one of the navy's finest.	PFC W.L. Woodward and PFC T.R. Gray relaxed in their quarters.	Marines demonstrate their strength by lifting an entire car in an off duty gathering.	Marine Barracks Yellow Water, Cecil Field	Sgt Elliot Smith enjoyed some off duty fishing at one of the  well-stocked fishing spots aboard the newly activated Florida Base.