Radiograph of a dry skull, from Howard R. Raper’s Elementary and dental radiography, 1913
Hand stereoscope in use, from Howard R. Raper’s Elementary and dental radiography, 1913
From Howard R. Raper’s Elementary and dental radiography, 1913
Pose for making a radiograph of the lower incisors and the antra, from Howard R. Raper’s Elementary and dental radiography, 1913