1925

Local chapter of Women's Christian Temperance Union cites lack of enforcement of Prohibition laws, claiming a still brazenly brews moonshine near Sherwood School; Dean and Alice Acheson buy the Stabler home Harewood on Meeting House Road

1926

Clara May Downey opens the Olney Inn with three tables seating 12 diners

1929

Tornado slashes swath from Unity to Mt. Zion, killing four and leveling houses and barns

1930

Women's Auxiliary of Fire Department organizes; Strength of bank during Depression helps protect local farmers from loss of farms

1935

First apartments open in Sandy Spring, built atop Sandy Spring Store by owner Herbert H. Adams

1938

Olney Theatre opens with play "The Lady Has a Heart"; Facing a water shortage at the Burnt Mills Filtration Plant, the Washington Suburban Sanitary Commission begins pumping water from the Patuxent at Mink Hollow over Parr's Ridge at Ashton and into the Northwest Branch behind Ingleside; Meeting House wired for electricity

c.1940

Headwaters, Olney home of Secretary of Interior Harold Ickes, becomes the frequent poker retreat of President Franklin Roosevelt

1942

Annals record flurry of World War II activities: plane spotting, sewings and preparation of surgical dressings, heightened fire protection, war bond promotions, bundles for Britain and the Red Cross, rationing of tires, gasoline, and food, and scrap metal drives; Brighton Dam begins impounding Triadelphia Reservoir on the Patuxent River; Annals record "stray" deer, observed near Brown's Corner; Olney Theatre closes due to wartime gas shortage, will reopen in 1946 with Helen Hayes in "Good Housekeeping"