Need experts help

[sfcharr]

I have a 69 C10 with a rebuilt 250 6 cylinder. The truck runs great, but lately I've noticed steam coming from the exhaust manifold above the the exhaust pipe flange when I first start the truck. In a few seconds the steam burns off. Today it appears that I'm leaking coolant on the ground under the exhaust manfold. Any ideas how to rectify this situation short of removing the head and having it inspected? The truck is completely stock and runs great with the exception of this coolant leak. the radiator is down abouit 1/2 gallon but that is from approximately 2000 miles from driving this summer.

Any advice would be appreciated