[Miscellaneous publications in connection with the Howe Press and the Perkins Brailler.]
Perkins School for the Blind.Howe Press.
Pennsylvania Institution of the Blind.
Philadelphia : Pennsylvania Institution of the Blind,
[19--]
Tactile text and print.
Straight extension keys [Perkins Brailler] -- Price list: appliances and mathematical aids, games and braille paper, Howe Press -- Operating instructions for the Perkins Brailler -- Instructions for the Perkins Brailler.
Howe Press
Perkins Brailler
Blind, Apparatus for the