| 716 | Interim Revision to Appendix F of BBN 1822D.C. Walden, J. Levin | Unknown | May 1976 |
| 688 | Tentative schedule for the new Telnet implementation for the TIPD.C. Walden | Unknown | June 1975 |
| 687 | IMP/Host and Host/IMP Protocol changesD.C. Walden · obsoleted by RFC 704 | Unknown | June 1975 |
| 660 | Some changes to the IMP and the IMP/Host interfaceD.C. Walden | Unknown | October 1974 |
| 636 | TIP/Tenex reliability improvementsJ.D. Burchfiel, B. Cosell, R.S. Tomlinson, D.C. Walden | Unknown | June 1974 |
| 611 | Two changes to the IMP/Host Protocol to improve user/network communicationsD.C. Walden | Unknown | February 1974 |
| 591 | Addition to the Very Distant Host specificationsD.C. Walden | Unknown | November 1973 |
| 548 | Hosts using the IMP Going Down messageD.C. Walden | Unknown | August 1973 |
| 547 | Change to the Very Distant Host specificationD.C. Walden | Unknown | August 1973 |
| 534 | Lost message detectionD.C. Walden | Unknown | July 1973 |
| 533 | Message-ID numbersD.C. Walden | Unknown | July 1973 |
| 494 | Availability of MIX and MIXAL in the NetworkD.C. Walden | Unknown | April 1973 |
| 473 | MIX and MIXAL?D.C. Walden | Unknown | February 1973 |
| 457 | TIPUGD.C. Walden | Unknown | February 1973 |
| 449 | Current flow-control scheme for IMPSYSD.C. Walden | Unknown | January 1973 |
| 440 | Scheduled network software maintenanceD.C. Walden | Unknown | January 1973 |
| 435 | Telnet issuesB. Cosell, D.C. Walden | Unknown | January 1973 |
| 386 | Letter to TIP users-2B. Cosell, D.C. Walden | Unknown | August 1972 |
| 365 | Letter to All TIP UsersD.C. Walden | Unknown | July 1972 |
| 359 | Status of the Release of the New IMP System (2600)D.C. Walden | Unknown | June 1972 |
| 333 | Proposed experiment with a Message Switching ProtocolR.D. Bressler, D. Murphy, D.C. Walden | Unknown | May 1972 |
| 297 | TIP Message BuffersD.C. Walden | Unknown | January 1972 |
| 228 | ClarificationD.C. Walden | Unknown | September 1971 |
| 65 | Comments on Host/Host Protocol document #1D.C. Walden | Unknown | August 1970 |
| 62 | Systems for Interprocess Communication in a Resource Sharing Computer NetworkD.C. Walden | Unknown | August 1970 |
| 61 | Note on Interprocess Communication in a Resource Sharing Computer NetworkD.C. Walden · obsoleted by RFC 62 | Unknown | July 1970 |