Show ministers son invents invisible ear drum the invisible ear drum invented by A 0 leonard a son of the late kev A B leonard DD for many years secretary of the board of foreign missions of the methodist odist episcopal church for his own relief from extreme deafness and head noises has so greatly improved his hearing that he can join in any ordinary conversation go to the theatre and hear without difficulty inexpensive and has proved a blessing to many people write for booklet to A 0 leonard inc suite 70 fifth avenue new york city |