Linda Perhacs, the 82-year-old psychedelic folk singer whose 1970 debut album Parallelograms was ignored on release, rediscovered by record enthusiasts decades later and eventually recognized as one of the great lost albums of the era, has been reported missing by her friends and collaborators. Her former manager Laurel Stearns, musician Julia Holter, DubLab co-founder Mark "Frosty" McNeill and video director Jessica Hundley issued a joint statement Monday asking the public for help. Perhacs released Parallelograms in 1970 while working as a dental hygienist, one of her clients, film composer Leonard Rosenman, brought her into a studio. The record eventually found its audience in the late 1990s and early 2000s, leading to two more albums in 2014 and 2017. Anyone with information about her whereabouts is asked to contact Laurel Stearns at primarywave.com.