I wasn't alive for the 67 storm but I was for 78. EPIC storms for sure. Peoples memory of the storms are also EPIC. There was likely a lot of snow already on the ground in GRR area in January as 77-78 was a big winter overall. Couple things to consider when listening to the stories. 1) Most people are not weather geeks like us so take all details with lots of salt. 2) The news media talked about the Jan 78 blizzard for days. News media over glorifies everything (got to get you to watch) and it totally influences people perceptions.