Gladys Kathleen Parkin (September 27, 1900 – August 3, 1990) was one of the earliest and youngest women to obtain a first-class government-issued radio license.

[3] On April 13, 1916, while a fifteen-year-old high school student at the Dominican College in San Rafael, she obtained a first-class commercial radio operator's license from the United States Government with the call sign 6SO.

She was the youngest successful female applicant for a radio license ever examined by the Government at that time.

I studied a good deal and I found it quite easy to obtain my first grade commercial government license, last April.

[1] By the age of 25, she was known by virtually every amateur radio-fan in her district, as she kept up an active interest in radio development and its future possibilities.