John.I read with interest your message about your Wifes mother working for the Callender Cable Co. in UK in 1920.
Recently my Daughter gave me an Advertising Poster for this company she found in an antique store . This ad reads " Callender CablesUsed all over the World and exclusively througoutR.M.S. Queen Mary " Shows a picture of the ship & lists the adress as: Hamilton House. Victoria Embankment, London.E.C. 4
Have You ever found out More information on this Callender Family?D.S.C. P. S. the sales tag on the poster reads:Original Advertisement Dated 1936.