| Information requests | |
| 1 | Improving content on photographic techniques |
| Introduction | |
| 2 | Introduction to negatives |
| 3 | Manipulating negatives |
| Photographers | |
| 4 | Henry Fox Talbot: Paper negatives, waxed paper negatives, calotypes |
| 5 | Félix Teynard: Egypt and Nubia: Negatives |
| 6 | Hill & Adamson: A tree at Colinston [Midlothian, Scotland] |
| 7 | Benjamin Brecknell Turner: Crystal Palace, Hyde Park |
| 8 | Alphonse De Launay: Negative and positive glass plates |
| 9 | Gustave Le Gray: Combination prints |
| 10 | Wilhelm Weimar (1857-1917, Hamburg): Glass negatives |
| Celluloid roll film | |
| 11 | Roll film |
| Information requests | |
| 1 | Improving content on photographic techniques |
| Introduction | |
| 2 | Introduction to negatives |
| 3 | Manipulating negatives |
| Photographers | |
| 4 | Henry Fox Talbot: Paper negatives, waxed paper negatives, calotypes |
| 5 | Félix Teynard: Egypt and Nubia: Negatives |
| 6 | Hill & Adamson: A tree at Colinston [Midlothian, Scotland] |
| 7 | Benjamin Brecknell Turner: Crystal Palace, Hyde Park |
| 8 | Alphonse De Launay: Negative and positive glass plates |
| 9 | Gustave Le Gray: Combination prints |
| 10 | Wilhelm Weimar (1857-1917, Hamburg): Glass negatives |
| Celluloid roll film | |
| 11 | Roll film |
