Sec Checks
| February 3, 1960 | Security Check | L. Ron Hubbard writes HCOB "Security Check". | |
| May 22, 1961 | The Only Valid Security Check | L. Ron Hubbard writes HCOPL 'The Only Valid Security Check'. | |
| June 19, 1961 | Sec Check Whole Track | L. Ron Hubbard writes HCOB 'Sec Check Whole Track'. | |
| September 21, 1961 | Security Check Children | L. Ron Hubbard writes HCOB 'Security Check Children'. | |
| October 25, 1961 | New Students Sec Check | L. Ron Hubbard writes HCOPL 'New Students Sec Check'. | |
| November 16, 1961 | Sec Checking | L. Ron Hubbard writes HCOB 'Sec Checking'. | |
| December 7, 1961 | Sec Checks Vital | L. Ron Hubbard writes HCOB 'Sec Checks Vital'. | |
| December 13, 1961 | Varying Sec Check Questions | L. Ron Hubbard writes HCOB 'Varying Sec Check Questions'. | |
| December 27, 1961 | Sec Checks on Staff | L. Ron Hubbard writes HCOPL 'Sec Checks on Staff'. | |
| January 11, 1962 | Security Checking, Twenty-Ten Theory | L. Ron Hubbard writes HCOB 'Security Checking, Twenty-Ten Theory'. | |
| September 12, 1962 | Security Checks Again | L. Ron Hubbard writes HCOB 'Security Checks Again'. | |
| April 11, 1967 | Sec Checking Implants | L. Ron Hubbard writes HCOB 'Sec Checking Implants'. | |
| August 20, 1967 | Sec Checker Form | L. Ron Hubbard writes HCOB 'Sec Checker Form'. | |
| October 23, 1967 | Sec Checking: Note | L. Ron Hubbard writes HCOB 'Sec Checking: Note'. | |
| November 8, 1967 | Security Checker Beingness | L. Ron Hubbard writes HCOB 'Security Checker Beingness'. | |
| May 7, 1977 | Long Duration Sec Checking | L. Ron Hubbard writes HCOB 'Long Duration Sec Checking'. | |
|
