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of Bathampton. London Office and Showroom at 56 Ludgate Hill, EC4. (1922)
of Bathampton, near Bath, Somerset. Telephone: Batheaston 8209. Cables: "Plasticine, Bath". (1929)
Address, Telephone and Cables as above. London Office: 68 Victoria Street, SW1. Telephone: Victoria 9239. (1947)
1900 William Harbutt set up a factory at Bathampton to manufacture Plasticine for commercial sale. Harbutt travelled widely to promote the product, and his theories about the teaching of art by allowing children free expression.
1922 British Industries Fair Advert for 'Plasticine'. Also for Play-Wax, Modellit and Novlart. Home Modelling Outfits; Books on Educational Modelling; Specialists in all Modelling Matters. (Stand No. F.48) 
1929 Listed Exhibitor British Industries Fair. Manufacturers of Plasticine. "Modellit", "Novelart" a dry Stencil picture-making process. "Colour Stencilart", "Easyart" Stencilling outfits. Publishers of books on modelling and "Plaster Casting" Self-hardening modelling material "Plastone", Fibrous Plasticine for Ear Plugs. (Stand No. C.34) 
1947 British Industries Fair Advert for "Plasticine" Home Modelling Outfits, also in bulk for School and Industrial purposes. "Plastone" Self-Hardening Modelling Material. Also for Chalks and Crayons, Sealing Wax, Writing Inks and Adhesive Paste and Gum. (Toys and Games Section - Olympia, 3rd Floor, Stand No. K.2410) 
1983 The Harbutt company, owned and run by Harbutt's descendants, continued to manufacture Plasticine in Bathampton until 1983.