This handwritten ledger contains detailed medical and family records of students at the Perkins School for the Blind, formerly Perkins Institution and Massachusetts School for the Blind. It was conducted as part of the Eleventh Census of the United States, Supplemental Schedule No. 4, Statistics of the Blind, Special Schedule for Schools for the Blind.
To access a digital copy of the census please visit the Internet Archive.
Among the most interesting information in the report is a listing for Helen Keller stating the cause of her blindness and deafness as "consumption of the stomach" (Page 17-18 and Supplemental Schedule No. 3, Statistics of the Deaf, pages 1-2).
The ledger also contains detailed descriptions on the cause of blindness for each individual.
Cause of Blindness (figure 1)
Cut with piece of tin (right), Pierced by pitchfork (left)
Discharge of cannon
Congenital (right), Measles (left)
Congenital (right), Cataract (left)
Atrophy optic nerve
Lymph. Ophthalmia (right), Blow of stick (left)
Mydriasis, nystagmus, atrophy
Blow of base ball
Cause of Blindness (figure 2)
Fall followed by meningitis and atrophy optic nerve
Gunshot wound (right), Symp. ophth.(left)
Retinal separation each eye
Symph. Inflam. (right), struck with knife (left)
Symp. ophthal. (right), Gunshot (left)
Vascular keratitis each eye
Purulent ophthal. (right), Ophthalmia (left)
Hit by a stone (right), Symp. affection (right)
Fall, striking back of head