De Forest Research
de Forest Research was a research and consultation company that was owned and operated by Kellam de Forest. 

de Forest also came up with the idea of silicon-based life for , as the original chemical substance in Gene L. Coon's script deemed to be inaccurate. (Inside Star Trek - The Real Story) 

Possibly, de Forest made the suggestion to change the Latin names of ancient gods to their original Greek ones, in the script of . 

In another example, a report from de Forest noted the error of the use of "bisexual" in the script for , but it was never changed in the script.

Also among the facts de Forest corrected was the Native American tribes whose mixture the inhabitants were in . de Forest furthermore corrected the costumes and props of the Indians accordingly, but they were not changed in the filmed episode. (Star Trek and History: Race-ing Toward a White Future) 

He sold the company in 1997, which currently operates under the name "Act One Script Clearance / de Forest Research".

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Production companies