The Echo Park Historical Society is one of the sponsors of this summer’s Echo Park Film Series, which will screen neighborhood-related movies outdoors at Echo Park Lake. The first of four movies will be shown on Saturday, Aug. 1 at 8 pm with the screening of Quinceañera, the 2006 indie movie about growing up and gentrification in Echo Park.  The movie, which is free,  will be screened in the northwest corner of the lake near Glendale Boulevard and Park Avenue.