A Select21 Memorandum for the Record: Preliminary Job Clusters is a 2002 HUMRRO paper about job clusters and training.

Select21 Draft Army Common Soldier Tasks is a list of Common Soldier Tasks Likely to be Retained in the Future.

Subject Matter Expert Panel Meeting #1 is a 2002 HumRRO slideshow about the development of critical KSAs and improved classifications.

Narrative Descriptions of Select21 Job Clusters is a 2002 paper going into detail about the clusters Close Combat and Electronics Maintenance.

Clusters Identified for Further Study is a 2002 list of the different type of job clusters to be studied in the future.

Pay of Officers and Enlisted Men of the Army is a 1907 report from the Washington Government Printing Office written by Johnson Hagood.

Reenlistment Experience is a 1957 paper documenting the reenlistment experience, personnel force statistics, and reenlistment statistics.

The Junior Officer Meets His Noncom is a 1966 ARMY article written by Morris J. Terrebonne, Jr. about NCO and Officer relationships.