With over 2,000 companies listed, many of which manufactured a broad range of products under different classifications the directory will only ever be an attempt to guide the user to a suitable set of results. Should these prove unsatisfactory a keyword search may work better - if not please feel free to contact me for assistance.
The directory is set to expand and new categories and listings will be added as appropriate.Of course many companies merged, changed their names or became divisions of larger groups and for convenience may be listed under multiple headings.
N.B. Default searches in the directory cover years 1909 - 1980. The database is now being expanded to cover years 1909 - 1990. Where applicable you may wish to expand the end year to access latest material.