When Lou enters the basement of Ed and Peggy's, he kicks the dead man's gun away from his body. When his father-in-law follows him down the basement, he yells "Gunshot" and we see the firearm is back in its original place.
(00:50:30) Dodd hoists Ed into the air by a rope slung over a rustic wooden beam. Ed outweighs Dodd by quite a lot, making it impossible for Dodd to pull him off the ground, let alone hold him up with one hand while tying off the bitter end. Without some mechanical advantage, all Dodd can do is swing.
Previously, it was shown that Ed Blumquist was running on foot to see if Peggy was alright, whereas Lou Solverson and Hank Larsson are in a car. Lou and Hank should reach Ed's house first. But here Ed is shown reaching his house first. However, it is clear from the fact that they drive off in the opposite direction that Lou and Hank first had other things to attend to.
When Ed drops the newspaper on the ground and the camera zooms in on the headline, the front page flaps in the wind, and the header on the second page shows it to be the Calgary Post for April 9, 2015.
The store owner mentions that "the hippies will have you believe" that his wife's hairspray is causing the planet to heat up. In 1979, climate change was not well known outside of the scientific community and the popular opinion at the time was global cooling. The Intergovernmental Panel on Climate Change did not start peer review research of global warming data until 1988. It is true, however, that chlorofluorocarbons (CFCs) in aerosol sprays had already been regulated by 1979. Scientists first warned in 1974 that CFCs were depleting the ozone layer, and the first law restricting their use passed in 1977.
When Hanzee explores the Blumquists' house after police left, he examines the notes pinned next to the phone. There is also a 20 Mexican Pesos banknote pinned on top. The design of this banknote was issued in 1994.
On the newspaper front page where the manhunt for Hanzee is mentioned, the word "chieftain" is misspelled as "chieftan".