1. [Early ophthalmoscope] Author(s): Meyer, Edouard, author Publication: Paris: Lauwereyns, 1873 Subject(s): OphthalmologyVision, OcularEquipment and Supplies
2. La projection des phénomènes visuels suivant les lignes de direction Author(s): Donders, F. C. (Franciscus Cornelis), 1818-1889 Publication: [Place of publication not identified] : [publisher not identified], [1872?] Subject(s): Vision, OcularVisual Perception