JMA’s Light Flight

Formed in the Seattle, Washington area around 1968/1969 by (John) Mark Allen and Jim Detwiler using mainly Slides and Movies before Dan Mortensen joined temporaily doing liquids.

Dan then left to form Trillium Lights with Jim Detwiler in 1969/1970.

Source - Dan Mortensen

If you can help with more information about this Light Show we would love to hear from you.

Seattle Helix 1969 (Courtesy Glen Beebe)