Black Mesa Press was created in 1981.
Black Press was created in 1975.
Black Classic Press was created in 1978.
Black Spring Press was created in 1985.
Black Mesa is 4,973' in elevation.
Mesa Amphitheatre was created in 1979.
Mesa Court was created in 1965.
Mesa Airlines was created in 1979.
MESA Imaging was created in 2006.
Mesa Laboratory was created in 1966.
Someone can find the source code of Black Mesa by visiting the Black Mesa website. On the website they give you all the information you need to know about Black Mesa. The wiki is even editable if you make an account.
The Haunted Mesa was created in 1987-05.
Black Mesa Source is PC exclusive, and will never be released on consoles.