Treatise on radiant light therapy, excerpt.
Treatise on radiant light therapy, excerpt.
McIntosh Electrical Corp. A treatise on radiant light therapy.
Chicago : McIntosh Electrical Corp., 1925. (pp.18 and 21) M1525t 1925 Osler - Robertson.
Chicago : McIntosh Electrical Corp., 1925. (pp.18 and 21) M1525t 1925 Osler - Robertson.
The figures in this excerpt from a promotional pamphlet depict the McIntosh Super-Ray Major Lamp and show it in action.
