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Dallmeyer's Rapid Rectilinear
In "The Silver Sunbeam (Eighth edition)" by J. Towler (New York: E.& H.T. Anthony & Co., 1873), p.445
Figure 3 is Dallmeyer's Rapid Rectilinear. It is the great group lens. Being very quick working, it is selected for interiors and for all kinds of quick out door uses. Nine sizes of this style.