The essay-periodical the Spectator appeared in two separate series. The first series was published daily except Sundays from 1 March 1711 until 6 December 1712, making a total of 555 issues. It was edited by Richard Steele and published in London by Samuel Buckley and Jacob Tonson. The second series, edited by Joseph Addison, Eustace Budgell and Thomas Tickell, and numbered 556–635, was published in London by Buckley and Tonson three times a week from 18 June to 20 December 1714. In appearance, the periodical resembled an eighteenth-century newspaper. It was printed on both sides of a double-column folio half-sheet, containing around 1 1/2 pages of text and half a page of advertisements and cost 1d. until the …
Italia, Iona. "The Spectator". The Literary Encyclopedia. First published 13 February 2006; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=7800, accessed 26 April 2015.]