| pulpless.com | The Robert Heinlein Interview and Other Heinleiniana |
| dimensionedelta.net | L'Envoi List: The Number of the Beast Characters |
| colorado.edu | Illustrated List of Heinlein Fiction |
| csustan.edu | SciFiOne's Heinlein Database |
| nitrosyncretic.com | Site:rah - The Robert A. Heinlein |
| heinleinsociety.org | The Heinlein Society |
| geocities.com | Omega Quadrant: The Works of Robert A. Heinlein |
| t-online.de | The Robert A. Heinlein Page (index) - The Robert A. Heinlein Page |
| lneilsmith.com | Robert Heinlein Remembered |
| heinleinprize.com | The Heinlein Prize |
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