RUSHWORTH, JOHN, "Proceedings in Parliament: February 28th - April 1st, 1648", in Historical Collections of Private Passages of State: Volume 7, 1647-48 (London, 1721), pp. 1010-1045. in British History Online (accessed 23 September 2017).
See also: RUSHWORTH, JOHN, "Proceedings in Parliament: February 28th - April 1st, 1648", in Historical Collections of Private Passages of State: Volume 7, 1647-48 (London, 1721), pp. 1010-1045. in British History Online (accessed 2018-01-10; the heading of chapter XXIV also has "1647"). The text of 6 March reads as follows: "The House (of Commons) was informed of one Mr. Petty, who hath found out an Art of Double Writing, to write Two Copies at once, and that he desired a Patent for Teaching of the same, under the Great Seal of England for certain Years; and the House hereupon Ordered, That a Patent should pass under the Great Seal to the said Mr. Petty for Seventeen Years, to teach his Art of double Writing."
cam.ac.uk
english.cam.ac.uk
Connor, Steve (2014) - 'Technological Object: PolygraphArchived 21 January 2018 at the Wayback Machine,' on website of Literature Technology Media (LTM) Research Group at University of Cambridge, Faculty of English; accessed 2018-01-11 (the same in: this page).
W. Poole (2017?) - 'Seventeenth-Century ‘Double Writing’ Schemes, and a 1676 Letter in the Phonetic Script and Real Character of John Wilkins.' To be published in the Notes and Records of the Royal Society. See: ORA-record, with a link to a downloadable pdf (access-date 2018-01-21).
Scheiner 1631: OCLC643064399. For Scheiner's pantograph see also Kemp, Martin (1990) – The Science of Art. (Part II[permanent dead link]: Machine and Mind), p. 180f.
stevenconnor.com
Connor, Steve (2014) - 'Technological Object: PolygraphArchived 21 January 2018 at the Wayback Machine,' on website of Literature Technology Media (LTM) Research Group at University of Cambridge, Faculty of English; accessed 2018-01-11 (the same in: this page).
Connor, Steve (2014) - 'Technological Object: PolygraphArchived 21 January 2018 at the Wayback Machine,' on website of Literature Technology Media (LTM) Research Group at University of Cambridge, Faculty of English; accessed 2018-01-11 (the same in: this page).
Scheiner 1631: OCLC643064399. For Scheiner's pantograph see also Kemp, Martin (1990) – The Science of Art. (Part II[permanent dead link]: Machine and Mind), p. 180f.
