Columbia subject headings:
Harvard subject headings:
Blind children--Education--Switzerland.
Deaf children--Switzerland--Education.
Scherr, Ignaz, 1801-1870.
Switzerland--Social conditions.
Teachers of the blind--Switzerland--History.
Teachers of the deaf--Switzerland--History.
Princeton subject headings:
Blind children--Switzerland--Education.
Deaf children--Switzerland--Education.
Scherr, Ignaz, 1801-1870.
Switzerland--Social conditions.
Teachers of the blind--Switzerland--History.
Teachers of the deaf--Switzerland--History.