"Among the purists in old time radio nostalgia, there exists a misconception that there was a time in which only manual sounds were used, and only much later did the recorded devices encroach. But recorded sound, in many forms, predated the Golden Age of Radio and the versatile transcriptions were used from the beginning…" Read more>>
"It’s A Wonderful Life: A Live Radio Play" at Wayside Theatre (2007) YouTube Demo of Manual Sound Effects>>