NASA's Aeronautics and Space Reports for 1968 features 12 monthly reports (#38 through #49) that cover a wide variety of topics. Each of the reports is around 4 1/2 minutes long, with a longer recap in the December report.
2017
2019
2021
1994
2003
2015
1997
2011
—
2023
2016
2012
2020
1981