Uploaded May 2025 | Updated September 2026, 6 days ago

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History of the Marvel Universe No. 321
The Origin of the Sentry

Sources:
Operation: Rebirth
- Captain America Comics 001 (1941)
- Captain America 109 (1969)
- Captain America 255 (1981)
The Disapparance of Captain America
- Avengers 004 (1964)
- What If 004 (1977)
The Weapon Plus Program
- New X-Men 130 (2002)
- New X-Men 145 (2003)
- Weapon X 023 (2004)
- Wolverine & Captain America: Weapon Plus (2019)
Nathaniel Essex during WWII
- Excalibur 007 (2005)
The Sentry and the Void
- The Sentry (Vol. 2) 005-006 (2006)
- The Sentry (Vol. 2) 008 (2006)
Idealized Origins
- The Sentry (Vol. 1) 001 (2000)
Bob and Lindy's Date
- New Avengers 010 (2005)
Lindy's Account
- Dark Avengers 013 (2010)
A Fictionalized Account of Early Adventures
- Age of the Sentry 001 (2008)
Meeting Other Heroes
- The Sentry (Vol. 1) 001 (2000)
- The Sentry/Fantastic Four (2001)
- The Sentry/Hulk (2001)
- The Sentry/X-Men (2001)
The Wedding of Bob and Lindy
- The Sentry 002 (2000)
Billy Turner, Scout
- The Sentry (Vol. 1) 004-005 (2000-2001)
- The Sentry (Vol. 3) 001 (2018)
- The Sentry (Vol. 3) 003 (2018)
The Famous Photo
- The Sentry/Spider-Man (2001)
Remembered and Forgotten
- The Sentry 001-005 (2000-2001)
- The Sentry vs. The Void (2001)
- New Avengers 007-010 (2005)
Return of the Sentry
- New Avengers 001-003 (2005)
- New Avengers 007-010 (2005)
- The Sentry (Vol. 2) 001-008 (2005-2006)

Additional Artwork:
- Invaders 001 (1975)

Additional information from various editions of the Official Handbook of the Marvel Universe.

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Music:
"Twisted" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
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