TV stations of the 70's

[muon2]

MINNESOTA
DULUTH.  ABC:  10 (Duluth, MN).  CBS:  3 (Duluth, MN).  NBC:  6 (Duluth, MN).
WALKER.  ABC:  10 (Duluth, MN).  CBS:  3 (Duluth, MN).  NBC:  7 (Alexandria, MN), 12 (Walker, MN).
BRAINERD.  CBS:  3 (Duluth, MN).  NBC:  7 (Alexandria, MN), 12 (Walker, MN).
BEMIDJI.  ABC:  11 (Fargo, ND).  CBS:  3 (Duluth, MN).  NBC:  6 (Duluth, MN), 12 (Walker, MN).
FERGUS FALLS.  ABC:  11 (Fargo, ND).  CBS:  4 (Valley City, ND).  NBC:  6 (Fargo, ND), 7 (Alexandria, MN).
ALEXANDRIA.  NBC:  7 (Alexandria, MN).
SAINT CLOUD and WILLMAR.  ABC:  5 (Minneapolis, MN).  CBS:  4 (Minneapolis, MN).  NBC:  7 (Alexandria, MN), 11 (Minneapolis, MN).  IND:  9 (Minneapolis, MN).
MINNEAPOLIS and SAINT PAUL.  ABC:  5 (Minneapolis, MN).  CBS:  4 (Minneapolis, MN).  NBC:  11 (Minneapolis, MN).  IND:  9 (Minneapolis, MN).
MANKATO and NEW ULM.  ABC:  5 (Minneapolis, MN), 6 (Austin, MN).  CBS:  4 (Minneapolis, MN), 12 (Mankato, MN).  NBC:  11 (Minneapolis, MN).  IND:  9 (Minneapolis, MN).
OWATONNA.  ABC:  5 (Minneapolis, MN), 6 (Austin, MN).  CBS:  3 (Mason City, IA), 4 (Minneapolis, MN), 12 (Mankato, MN).  NBC:  10 (Rochester, MN), 11 (Minneapolis, MN).  IND:  9 (Minneapolis, MN).
FAIRMONT.  ABC:  6 (Austin, MN).  CBS:  12 (Mankato, MN).  NBC:  10 (Rochester, MN).
ALBERT LEA, AUSTIN, and ROCHESTER.  ABC:  6 (Austin, MN).  CBS:  3 (Mason City, IA).  NBC:  10 (Rochester, MN).
WINONA.  ABC:  6 (Austin, MN).  CBS:  8 (La Crosse, WI).  NBC:  10 (Rochester, MN).
MARSHALL.  CBS:  11 (Sioux Falls, SD), 12 (Mankato, MN).  NBC:  13 (Sioux Falls, SD).
WORTHINGTON.  ABC:  9 (Sioux City, IA).  CBS:  11 (Sioux Falls, SD).  NBC:  13 (Sioux Falls, SD).

I lived the Twin cities for almost the entire decade, and this list covers the status for less than one year of the decade. Before March 1979, Channel 5 was the NBC affiliate (KSTP), 9 was the ABC affiliate (KMSP), and 11 was independent (WTCN). The 70's really would have been viewed as the time before the switch. I also see that the PBS stations aren't on any of the lists, which would have been channel 2 (KTCA) and 16 (KTCI) in Minneapolis.

[muon2]

MINNESOTA
MINNEAPOLIS and SAINT PAUL.  ABC:  5 (Minneapolis, MN).  CBS:  4 (Minneapolis, MN).  NBC:  11 (Minneapolis, MN).  IND:  9 (Minneapolis, MN).

I lived the Twin cities for almost the entire decade, and this list covers the status for less than one year of the decade. Before March 1979, Channel 5 was the NBC affiliate (KSTP), 9 was the ABC affiliate (KMSP), and 11 was independent (WTCN). The 70's really would have been viewed as the time before the switch. I also see that the PBS stations aren't on any of the lists, which would have been channel 2 (KTCA) and 16 (KTCI) in Minneapolis.

Yeah, my data is cobbled together from a lot of different sources I've accumulated over the years.
I went through a period where I didn't have a computer for several weeks, so this was my paper-and-pen project to keep myself busy.  As I said, I was guessing at network affiliations.

The stations viewed in each county comes from a report dated 1972.  The report identifies each station by call letter, channel number, and market.

For city of license and network affiliation, I have a hand-copied list from an unknown date--I thought it was from the late 1970's, but it may have been later.  I also have a list from 1966, which gives market, channel number, and network; the 1966 list does identify 4 as CBS, 5 as NBC, 9 as ABC, and 11 as independent.

As I've been working on this, I've been wondering if I should look up each station's call letters on Wikipedia to see if I could find out more about them, but frankly that just sounds like more work than I want to put in.

I don't know why it would say 1972, since 1972 was the same lineup as in 1966. The change occurred in 1979.

In any case props for all the work you're putting in.