Paul Simon recorded many demo’s – often as Jerry Landis – of songs written by others. One of those who hired Paul was Ouida Mintz. In her biograpy ‘My friend Lenny’ she mentioned this.

A lot of those demo’s made it to a (bootleg)cd called “Paul Sinon aka Jerry Landis” Vol 2:

(1962-06-06) I’m Scared (Dub 3, Take 2), recorded at Associated Recording Studios in New York City.

This demo made it to a 10-inch 78rmp shellack record and a copy was recently sold at eBay: