| November 9, 1956 | Accounting Department, Washington | L. Ron Hubbard writes HCOB 'Accounting Department, Washington '. | |
| November 9, 1956 | Activities of Legal Department | L. Ron Hubbard writes HCOB 'Activities of Legal Department '. | |
| May 26, 1959 | To Department Heads | L. Ron Hubbard writes HCOPL 'To Department Heads'. | |
| March 13, 1961 | Department of Official Affairs | L. Ron Hubbard writes HCOPL 'Department of Official Affairs'. | |
| April 16, 1962 | Comments on Letter Registrar Department | L. Ron Hubbard writes HCOPL 'Comments on Letter Registrar Department'. | |
| June 24, 1963 | Review of Departments | L. Ron Hubbard writes HCOPL 'Review of Departments'. | |
| January 25, 1964 | Department of Enrollment | L. Ron Hubbard writes HCOPL 'Department of Enrollment'. | |
| January 29, 1964 | HCO (Sthil), Ltd., Charts, Routings and Publications, The Enrollment Department | L. Ron Hubbard writes HCOPL 'HCO (Sthil), Ltd., Charts, Routings and Publications, The Enrollment Department'. | |
| June 25, 1964 | Departmental Reports | L. Ron Hubbard writes HCOPL 'Departmental Reports'. | |
| September 21, 1965 | Purposes of the Department of Registration | L. Ron Hubbard writes HCOPL 'Purposes of the Department of Registration'. | |
| September 21, 1965 | Purposes of the Department of Registration | L. Ron Hubbard writes HCOPL 'Purposes of the Department of Registration'. | |
| October 21, 1966 | Six-Department System | L. Ron Hubbard writes HCOPL 'Six-Department System'. | |
| April 17, 1970 | Department 1 | L. Ron Hubbard writes HCOPL 'Department 1 '. | |
| February 16, 1972 | The Purpose of the Department of Personnel Enhancement | L. Ron Hubbard writes HCOPL "The Purpose of the Department of Personnel Enhancement". | |
| August 29, 1979 | Org Board for the Department of the Chaplain | L. Ron Hubbard writes HCOPL 'Org Board for the Department of the Chaplain '. | |
| August 29, 1979 | The Department of the Chaplain | L. Ron Hubbard writes HCOPL 'The Department of the Chaplain '. | |
| December 15, 1979 | Surveying for Department 17 Services | L. Ron Hubbard writes HCOPL 'Surveying for Department 17 Services '. | |
| January 9, 1980 | Departmental Mini Programs: The Key to Achievement Exec Series 20 | L. Ron Hubbard writes HCOPL 'Departmental Mini Programs: The Key to Achievement Exec Series 20'. | |
