It looks, to me, like "C. I. ". One of Columbia's? IF the tail of the letter C's portion that crosses the vertical line represents the letter "T", THEN it is a fancy "CT", which would represent Columbia Terre Haute. However, I don't think the pressings look like those of the Terre Haute plant, not being styrene, and the label printing fonts and graphic layout doesn't look anything like what Terre Haute EVER used. So I doubt that the logo represents "CT". I can't think of any Columbia facility that is in a city that starts with the letter, "I". But, the only codes that I know of that start with the letter, "C", are Columbia's.
Regarding the label and font style, I recognise them as those used by of one of the main Illinois pressing plants used by northern and central Illinois record labels, and especially independent labels. Unfortunately, I can't remember the name of that plant.