Collection contains promotional literature, sent by mail, describing the benefits of and offering a "ten day free trial" for
an Elco electric health generator, which claims to generate combinations of violet ray, medical electricity, vibration, and
ozone. Includes: Cover letter (2 sheets), with reproduced signature, on illustrated letterhead; price list and order form
(Form 212); "Special bank deposit plan" (Form 211A); self-addressed reply envelope; "Elco electric massage vibrators" advertisement
(Form 135A); "Elco Electric health Generator 12" brochure (Form 150); "Stop that pain!" advertisement for ozone generator
and violet ray instruments; printed testimonial certificate, dated 1928.