<Tr> <Td> </Td> <Td> This article relies too much on references to primary sources . Please improve this by adding secondary or tertiary sources . (July 2016) (Learn how and when to remove this template message) </Td> </Tr> <P> Southern California Timing Association (SCTA) is a competition sanctioning body that maintains rules and record for Land Speed Racing events held at El Mirage Dry Lake, California and at the Bonneville Salt Flats, Utah . It is a non-profit, volunteer organization made up of eleven separate car clubs . </P> <P> SCTA has been in existence since its first meeting on November 29, 1937 and is considered to be the oldest operating racing organization in the United States . At that first meet between five and seven local car clubs met to organize lake bed races and to establish a set of guidelines to make dry lake land speed trials safer . Since its creation the SCTA in conjunction with its sister organization the Bonneville Nationals Inc . (BNI) have organized, sanctioned and recorded hundreds of meets and thousands of records . </P> <P> The organization holds two meets each year on the Bonneville Salt Flats in Utah . Speed Week is held in August and World Finals in October . The SCTA also holds six events at El Mirage Dry Lake in Southern California . It is responsible for ensuring compliance with BLM standards for use of public lands, safety regulations for competitors and spectators, technical inspection of race vehicles, timing recording of record attempts and maintaining a list of current class records as well as history of prior record holders . </P>

Where did the scta first hold time trials (the event was called speed week.)