Andy Hertzfeld:

In August of 1983, we moved across the street to a larger building that was unimaginatively designated “Bandley 3”. I had worked there before, in 1980, when Apple had initially built it to house the original engineering organization. But now it was to be the new home of the newly christened “Macintosh Division”, over 80 employees strong.

The building looked pretty much like every other Apple building, so we wanted to do something to make it look like we belonged there. Steve Capps, the heroic programmer who had switched over from the Lisa team just in time for the January retreat, had a flash of inspiration: if the Mac team was a band of pirates, the building should fly a pirate flag.

On its 40th anniversary, Apple is flying a replica of that original pirate flag over its corporate headquarters today.