(of double capacity) and The Junior Set (a smaller set than the Standard for use by young people). Special suits, swim fins, dive masks, etc. are also available. 1955 or after: Siebe Gorman stops making standard diving dress. The 1955 underwater catalogue of the London sporting goods store Lillywhites offers the "Essjee" Standard Aqualung, Twin-Cylinder Aqualung and "Tadpole" Aqualung at £40, £65 and £38 respectively alongside the Essgee full-face mask for use with these breathing sets, the Essjee Mid-Season sponge-rubber wetsuit and the Essgee weight belt. In August 1955, Cogswell & Harrison, another London stockist of Siebe Gorman equipment, places an advertisement in Neptune offering not only the "Essjee" single and twin aqualungs but also Siebe Gorman's Mid-Season sponge-rubber wetsuit, its stockinette-lined drysuit and its proofed gabardine Grenfell drysuit. 1956: The 1956 Lillywhites underwater catalogue introduces Siebe Gorman Mark II Essgee Aqualungs, "now modified with decreased resistance to breathing and improved flow of air". The 1956 Cogswell & Harrison catalogue features the Essgee breathing sets, Essgee Mid-Season sponge-rubber wetsuit, Essgee Grenfell proofed gabardine dry suit, Essgee two-piece dry suit "based on experience with wartime frogmen", "made of green rubberised cotton stockinette" and the Essgee Continental two-piece dry suit "in green vulcanised sheet rubber". 1957: Esgee Mistral Aqualung introduced, made under Cousteau-Gagnan Patents with the general design features of the Spirotechnique "Mistral" and following on the lines of development of the Essgee Mark II with double-lever action to reduce opening resistance to a minimum. The Essgee Mistral Aqualung appears in the 1957 Lillywhites underwater catalogue alongside the Essgee Mark II Aqualung. From January 1957, Siebe Gorman run a series of advertisements in the British Sub-Aqua Club journal Triton offering "everything for underwater swimming" including the Essgee two-piece dry suit, the Essgee Continental two-piece dry suit and the Essgee Dive Mask Mark II. 1959: The Fairey Aviation Company took over Siebe Gorman. From November 1959 to April 1960, Siebe Gorman run a series of advertisements in Triton celebrating the use of Siebe Gorman wetsuits and weight belts by the British team at the World Underwater Fishing Championships off Malta and Gozo in August 1959. 1960s: Siebe Gorman started making scuba gear aimed at the public market (sometimes using the tradenames Essgee and Essjee), although they had made it earlier for work divers and the Navy. They also continued to make diving bell equipment and pressure chambers. 1960: From May 1960 to June