Fox Talbot - The Latticed Window at Lacock Abbey (1835) [Print made from the oldest negative in existence. Size is about inch square, using a early lens to get more light concentrated on a small area.]
Louis Daguerre - Boulevard du Temple (1838) [Earliest photograph showing a living person. It is a view of a busy street, using an exposure time was at least ten minutes the moving traffic left no trace. Only the two men near the bottom left corner, one apparently having his boots polished by the other, stayed in one place long enough to be visible. Note that, as with most daguerreotypes, the image is a mirror image.]
Pioneering Photographer Robert Cornelius Credited With World's First Selfie c. 1839
Robert Cornelius - Self Portrait (1839) Possibly the first self-portrait, taken outside to ensure adequate light it would of required a few minutes of staying perfectly still for enough exposure. Also detailed at http://www.loc.gov/pictures/item/2004664436/
Fox Talbot's 'Mousebox' Camera [First camera to use a lens to focus as much light on a smaller area (about one inch square) as possible for faster exposure times. Unfortantly not popular as there was no way to enlarge the photo again.]
Tomas Wedgewood (1771 - 1805) - Possibly first person to try and make a photograph, but wasn't able to fix the photo. The word Photography wasn't used in his time and he called his experiments 'Copying Paintings upon Glass'