International Association of Panoramic Photographers
The International Association of Panoramic Photographers (IAPP) first met in April of 1984. IAPP is an affiliate of the Professional Photographers of America, headquartered in Boca Raton, Florida. Membership in the Association is comprised of amateur and professional photographers. Members are from the motion picture industry, NASA, computer sciences, journalism, art and commercial photography. Association members give technical assistance, share information about business opportunities, stock agency requirements, color printing techniques, and more.
I have used these exact brushes exclusively for over 30 years teaching art to students from kindergarten to college. They hold up extremely well, if washed properly. They also hold a point and can handle a lot of paint at once. If taken care of they can last for years of continuous use. Students appreciate their quality and get much better results with a higher grade of brush, I cannot believe that Loew-Cornell has discontinued making them; so get them while you can find them.