Daily (except Sundays and holidays), June 1, 1983-<Feb 2009>
Vol. 3, no. 575 (June 1, 1983)-
Issue for Feb. 22, 2009 called v.1, no. 1. to reflect change from North American ed. to US ed. Beginning with Mar. 2, 2009 issue resumed previous vol. numbering with v.30, no. 2, but dropped continuous whole numbering.
Has occasional supplements with designation: North American edition.