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.
Black Mesa is believed to have formed many millennial ago when black lava rock coated the top forming the black mesa
Mesa Amphitheatre was created in 1979.
Mesa Airlines was created in 1979.
Mesa Laboratory was created in 1966.
Mesa Court was created in 1965.
MESA Imaging was created in 2006.
The Haunted Mesa was created in 1987-05.
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.