Digiti-lingua : or, The most compendious, copious, facile, and secret way of silent converse ever yet discovered ....
British Deaf History Society.
Royal National Institute for the Deaf (Great Britain).Library.
Feltham, Middlesex : British Deaf History Society Publications,
1999.
Original pamphlet in the Library of the Royal National Institute for the Deaf.
Facsimile of the ed. published, London: for P. Buck, 1698.
Sign language