Scientology Chronology - April 1963
| April 2, 1963 | GPM Items | |
| April 2, 1963 | Construction Information | |
| April 2, 1963 | Diagrams Illustrating Tape of 28 March 1963 | |
| April 4, 1963 | Anatomy of the GPM | |
| April 4, 1963 | Director of Training Weekly Student Interviews | |
| April 5, 1963 | Organization Students on Saint Hill Course | |
| April 6, 1963 | R3M2, What You Are Trying to Do in Clearing | |
| April 8, 1963 | Routine 3M2, Corrected Line Plots | |
| April 8, 1963 | Routine 3M2, Listing and Nulling | |
| April 11, 1963 | Emergency Library | |
| April 13, 1963 | Policy of HGCs | |
| April 13, 1963 | Routine 2G, Original Routine 2, 3GA, 2-10, 2-12, 2-12A and Others Specially Adapted | |
| April 16, 1963 | Top of the GPM | |
| April 18, 1963 | Directive Listing | |
| April 18, 1963 | Routine 3M2, Directive Listing | |
| April 20, 1963 | Basic Purpose | |
| April 20, 1963 | What Clearing Is | |
| April 23, 1963 | Goals | |
| April 23, 1963 | Routine 3M2, Handling the GPM | |
| April 24, 1963 | Routine 3M2, Tips, The Rocket Read of a Reliable Item | |
| April 25, 1963 | Finding Goals | |
| April 25, 1963 | Duties of a Staff Member | |
| April 25, 1963 | Meter Reading TRs | |
| April 28, 1963 | Routine 3, An Actual Line Plot | |
| April 29, 1963 | Routine 3, Directive Listing, Listing Liabilities | |
| April 30, 1963 | Pattern of the GPM | |
| April 30, 1963 | Routine 3 | |
| April 30, 1963 | The Saint Hill Staff Co-audit | |
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