| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| How high can it fly?: Examining the evidence on Information Mapping's method of high-performance communication | 978-0-9625565-1-7 (0-9625565-1-3) | 1992 |
| Mapping Hypertext: The Analysis, Organization, and Display of Knowledge for the Next Generation of On-Line Text and Graphics | 978-0-9625565-0-0 (0-9625565-0-5) | 1990 |
E.H. · R. E. · R. H. · R Horn · Robert E. · Robert H. · Robert Horn