RETAIL By Andrew Asch | Thursday, January 21, 2021 The California Millinery Supply Co., located at 721 S. Spring St. in downtown Los Angeles’ Fashion District, sells hat-making supplies and accessories. For decades, film, television and theater productions, fashion designers and craftspeople have purchased hat frames, feathers, ribbons and veiling to make period headwear as well as new styles. Irene Arroyo, the company’s owner, estimated that her sales have declined 90 percent from 2020 and 2019. Film and television productions, which made up a significant part of her busi...