References
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- Eder, J. M. and Wentzel, F., Ausführliches Handbuch der Photographie, Book IV, Part I, Halle (1928), pp. 86-93.
- American Journal of Photography, 2, 270 (1860).
- Le Gray, G., Photographie; Traité Nouveau des Procédés sur Papier et sur Verre (n.d.), cited in J. M. Eder and F. Wentzel, Handbuch, IV, I (1928), p. 9.
- Wentzel, F., Memoirs of a Photochemist, American Museum of Photography, Philadelphia (1960), pp. 53-54.
- Eder, J. M. and Wentzel, F. Handbuch, IV, I. (1928), p. 200.
- Vogel, W., The Philadelphia Photographer, 2, 181 (1874).
- Photographisches Archiv, 2, 57 (1889).
- Fox, S. and Foster, J., Introduction to Protein Chemistry, Wiley, New York (1957), p. 354.
- Eder, J. M., Handbuch, IV, I (1898), p. 121.
- Harrison, W. J. A History of Photography, Scovill, New York (1887), p. vii.
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- Just, E., Rathgeber für den Positivprozess auf Albuminpapier, Vienna (1887), p. 88.
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- Photographisches Archiv, 2, 57 (1889).
- Eder, J. M. and Wentzel, F., Handbuch (1928), p. 201.
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