Apple

If you read Isaacson's biography of Jobs, both Steves got started in the fledgling industry by doing exactly that; sending letters and showing up at the offices of established people in the industry and just asking them for stuff. I think that's how Jobs got his first gig at Atari, if i remember correctly.

Very cool that both of them, who benefitted so much from reaching out personally, decided to pay it forward when they became titans themselves.