1. Charter and by-laws of the Pennsylvania Retreat for Blind-Mutes and Aged and Infirm Blind Persons: incorporated, April 13, 1882 Author(s): Pennsylvania Retreat for Blind-Mutes and Aged and Infirm Blind Persons. Publication: Philadelphia : John H. Culbertson & Co., [1882?] Subject(s): Hospitals, Special -- organization & administrationVisually Impaired PersonsConstitution and BylawsPhiladelphiaPennsylvania Retreat for Blind-Mutes and Aged and Infirm Blind Persons.