The following comes from the May-June, 1964 issue of
THE SUNBEAM - a publication of the Sunbeam Owners Club, Inc.
 National Headquarters, 505 Park Ave. N. Y. 22, N. Y.
John Panks (Director, Rootes Motors Incorporated, America) used a series of "quasi" newsletters to publicizes all things Rootes.
 This particular issue announces "Three New 1964 Sunbeams":
 The Series IV Alpine, 'available for the first time with a three speed Borg Warner..automactic...', the Sunbeam Imp, '100% sports car in spite of its being a small family sedan', and The Big Cat, '...one of the hairiest sports cars ever...'.  The final two pages detail the corporate version of the Tiger's beginnings.
 

The Olson Annex

Tiger Web Page

The Registry Annex

The Registry Web Page

The Miller Annex

Rootes One Web Page