OK – Capitalize without periods. Also OK'd, OK'ing, OKs. Do not use okay.
Old Courthouse – The proper name for the old Baldwin County facility that is now a part of the Georgia College campus. On second and subsequent reference, use the courthouse.
Old Governor's Mansion – The proper formal name is Old Governor's Mansion (note the apostrophe). The mansion or Governor's Mansion is acceptable on second and subsequent reference. Never write it as Old Governors Mansion.
Old South – The South prior to the Civil War.
ongoing – This is written as one word with no hyphen.
online – One word in all cases for the computer connection term. On-line is incorrect.