| March 20, 1957 | Income Sources | L. Ron Hubbard writes HCOB 'Income Sources'. | |
| June 5, 1959 | Income Report Required | L. Ron Hubbard writes HCOPL 'Income Report Required'. | |
| July 18, 1959 | Income Tax Reform | L. Ron Hubbard writes HCOB 'Income Tax Reform'. | |
| October 16, 1961 | Income Records | L. Ron Hubbard writes HCOPL 'Income Records'. | |
| April 10, 1964 | Balancing Income Outgo, Paper, Postage and Printing | L. Ron Hubbard writes HCOPL 'Balancing Income Outgo, Paper, Postage and Printing'. | |
| April 7, 1965 | Book Income | L. Ron Hubbard writes HCOPL 'Book Income'. | |
| December 9, 1965 | HCO Income, Memberships-Tape Plays | L. Ron Hubbard writes HCOPL 'HCO Income, Memberships-Tape Plays'. | |
| December 9, 1965 | HCO Income, Memberships-Tape Plays | L. Ron Hubbard writes HCOPL 'HCO Income, Memberships-Tape Plays'. | |
| April 15, 1967 | The Counting of Gross Income | L. Ron Hubbard writes HCOPL 'The Counting of Gross Income'. | |
| September 10, 1967 | Exchange, Org Income and Staff Pay | L. Ron Hubbard writes HCOPL 'Exchange, Org Income and Staff Pay'. | |
| September 21, 1967 | WW Income Outgo | L. Ron Hubbard writes HCOPL 'WW Income Outgo'. | |
| July 30, 1968 | Gross Income Senior Datum | L. Ron Hubbard writes HCOPL 'Gross Income Senior Datum'. | |
| November 18, 1969 | Central Files, Value Of, The Gross Income of the Org and Why | L. Ron Hubbard writes HCOPL 'Central Files, Value Of, The Gross Income of the Org and Why'. | |
| March 1, 1971 | Income Sources | L. Ron Hubbard writes HCOPL 'Income Sources'. | |
| March 9, 1972 | Income Flows and Pools, Principles of Money Management | L. Ron Hubbard writes HCOPL 'Income Flows and Pools, Principles of Money Management'. | |
| August 11, 1972 | Foundation Income | L. Ron Hubbard writes HCOPL 'Foundation Income '. | |
| September 9, 1972 | LRH Income | L. Ron Hubbard writes HCOPL 'LRHIncome '. | |
| June 23, 1975 | Ad Council Income Planning | L. Ron Hubbard writes HCOPL 'Ad Council Income Planning'. | |
| October 26, 1975 | Gross Income/ Corrected Gross Income Ratio, Failed Cases and Failed Students | L. Ron Hubbard writes HCOPL 'Gross Income/ Corrected Gross Income Ratio, Failed Cases and Failed Students'. | |
| January 20, 1979 | Income Cutatives and Salary Sum | L. Ron Hubbard writes HCOPL 'Income Cutatives and Salary Sum '. | |
| August 9, 1979 | Call-in: The Key to Delivery and Future Income | L. Ron Hubbard writes HCOPL 'Call-in: The Key to Delivery and Future Income '. | |
| September 28, 1979 | Special Income | L. Ron Hubbard writes HCOPL 'Special Income'. | |
