From CNN: Super Mario's 35th anniversary: The surprising reason Nintendo made Super Mario a plumber - CNN
Super Mario's 35th anniversary: The surprising reason Nintendo made Super Mario a plumber - CNN

https://www.cnn.com/2020/09/14/tech/super-mario-bros-35th-anniversary-nintendo/index.html?adobe_mc=TS%3D1600114946%7CMCMID%3D27816720641991816529214419058431835492%7CMCAID%3D2DD464658507870B-6000010480000743%7CMCORGID%3D7FF852E2556756057F000101%40AdobeOrg&iid=cnn-mobile-app