American Design Drafting Associationi (ADDA)
he American Design Drafting Association an international non-profit, professional membership and educational organization born in Bartlesville, Oklahoma in 1948. The organization was conceived by a dedicated and enthusiastic group of oil and gas piping drafters who were involved in various phases of design drafting. This group consisted of highly specialized industry drafters, educational instructors, piping designers, and engineering personnel. In 1948, this group incorporated in the State of Oklahoma as the Bartlesville Draftsmen's Club. This is the earliest known drafting club, association or society. This group is considered as our founding association.