I remember when 132.05 went to 123.9 (deps via MID and CPT). Departures to the NW (now UMLAT) were 128.9. After the TMA, I think aircraft routing via SAM used 134.45, later 135.05 and 129.42, inbounds to BIG used 127.1, and outbounds via SFD used 127.7. 132.8 was for westbounds, then 133.6 as stated. Later, 132.8 was replaced by 134.75, which had been used, also as stated, for LAM-POL before that became 121.02.