Good Morning, James!
Thank you for your inquiry to History Hub!
The semi-annual rosters (i.e., April and October) for 1960-74 for Army units are attached to the morning reports of the respective units. All rosters for the period are not available and usually list only enlisted personnel. Copies may be obtained from microfilm by writing to NARA's National Personnel Records Center, (Military Personnel Records), 1 Archives Drive, St. Louis, MO 63138-1002. Research and reproduction fees are charged for this service. Please use the GSA Standard Form 180 to request this information via their web site at http://www.archives.gov/veterans/military-service-records/standard-form-180.html.
Feel free to contact History Hub if you have further questions.