Bertrand rectilinear system. Canada. 1953. Dr. Claude Bertrand, the French Canadian neurosurgeon, introduced his pneumotaxic guide in 1953 for the treatment of Parkinson's disease. It was based on the orthogonal system combined with rectolinear...
Bookplate: Seated Eastern male in ethnic dress in a medallion around which is motto: Labeur est mon desduyt. Below two tapeworms form a holder enclosing a mosquito on a pin.
Picture of a man reclining between two pictures, labeled "Fons Vita" and "Fons Mortis". Man is reclining on a pedestal labeled "Cajal", with a statue behind him. At right "In memoriam" and at bottom "Dr. Manuel Morales Fraile". By Manuel Calderon.
Bookplate: A crowned serpent, curled around a caduceus, decorates the elaborate facade of a "gingerbread" house. Patients ring the respective bells of Dr. Oskar Lerperger, an ophthalmologist, and Dr. Anna Lerperger, a pediatrician.