Cutlery and Allied Trades Research Association Cutlery and Allied Trades Research Association Cutlery and Allied Trades Research Association (CATRA) is an internationally known research and technology organisation in Sheffield, England which specialises in knives, cutlery, tableware, metallic holloware (such as saucepans), shaving razors, industrial knives/ blades and hand/garden tools. CATRA was originally set up by the British Government in 1952 to carry out developments for the UK's cutlery and knife industries, for which the area of Sheffield in Yorkshire is world-famous. CATRA has developed a range of unique machines for measuring the cutting performance of all types of cutting edges from razor blades to large knives
Henry D. Messer the group under a pseudonym, which was the most common practice for members of the organization at that time. Messer also participated in the Stonewall riots of 1969. Around 1970, Messer and House hosted a meeting with Mattachine members and New York City Councilman Eldon R. Clingan, where the members of the organization shared their firsthand accounts of discrimination with the city leader. Clingan and Councilman Carter Burden introduced a bill in 1971, which Messer helped author, that would have prohibited discrimination in employment and housing on the basis of sexual orientation in New York City. The bill was unsuccessful