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90. John Johnson, Daguerreotypes," Eureka, 1 (1846), 25.

91. Root, Camera, 347-48.

92. "Dr. Draper Dead, World.

93. Draper, "Process," 223.

94. (Brackets mine): "The proof was procured by two double convex nonachromatic lenses set together, each lens being of 16 inches focus [separately, but eight inches together] and 4 inches aperture." John William Draper to Sir John F. W. Herschel, ? July 1840, Draper Papers.

95. Stapp, Cornelius, 62 (plate 9), 66 (plate 11).

96. Draper Collection. For a reproduction of this image see McManus, "Daguerreian Treasures," 252.

97. Draper, "Process", 224.

98. Plate L was found in a lap desk beside, but not itself inside the plate-box. It was mounted behind a brass mat and glass in an early leather miniature case. The brass mat is stamped 1-GUY on the reverse side. Under superficial examination all twelve plates appear to have similar abrasion marks along their edges. This fact seems to imply that all twelve plates were put in and out of the plate-box during some period of their existence. Plate L may have thus been in the plate-box with the rest of the images for a time, and later cased.

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