Sam states that fives years ago he met the Alpha Vampire in Hoople, North Dakota. He actually met him in Missoula, Missouri. In S7 E22, "There Will be Blood," Crowley tells Sam and Dean to look for the Alpha in Hoople. There they only find the girl Emily in the Alpha's home. She directs them to his home in Missoula, where they do find him.
Sam is shown loading the round Mic gives him into The Colt by rotating the cylinder and opening a loading bay. While a lot of single action revolvers are loaded that way, that is not how a Colt Paterson is loaded. In order to load a Colt Paterson you have to pull a pin out of the frame of the gun and then pull the barrel off. Once the barrel has been removed you then have to remove the cylinder from the arbor (a rod that the cylinder rotates on) in order to load it, loading this type of revolver takes at least a minute, and that is with a lot of practice, it would of been impossible for Sam to load it in the split second where the Alpha was distracted.
The image and caption on the article about Michael Parks' murder scene in Akron is recycled from when a demon tried to assassinate Rowena and two other witches at a café in Denver. This is apparent because the caption reads "Denver police continue to investigate the homicide, Café Elta remains closed to the public."