Period Quaker costumes make a come-back during the 1917 celebration of the Meeting House centennial. The gala occasion saw two days of worship, oratory, reminiscences, pilgrimages to the spring to drink "deeply of its healthy water," historical re-enactments by young and old, and feasting that at one sitting consumed 100 fried chickens, at another 3,000 sandwiches. When darkness threatened the festivities, Friends turned on the headlights of their newfangled autos so the shows could go on.

Sandy Spring Friends School celebrates a Christmas Song Fest in the Meeting House in the 1960's, with Barry Morely conducting.

The marriage of Jocelyn Woodward and William E. Shotts takes place in the Meeting House in 1950. Such glimpses of Friends ceremonies are few; today Meeting policy does not permit photographs during worship and other services.

"The Misses Chandlee's school house" at Brinklow held the first recorded Meeting of the Orthodox Friends in 1861. A schism rent the Quaker faith in the early 1800s, leading to the separation of the local congregation into Orthodox and the Hicksites, who continued to meet in Sandy Spring; not until 1950 did the two reunite. "The Orthodox hold their first meeting in the little schoolhouse by Edward Lea's gate," noted Charles Augustus Iddings in his 1861 Journal, "only 15 or 16 about."