Why is Claude Shannon's Master's thesis behind a paywall

Hanan sez, "'A Symbolic Analysis of Relay and Switching Circuits' by Claude Shannon can be viewed but cannot be printed. It's behind an MIT paywall. This thesis from 1937 predicted moderns digital circuitry. Why can't we print and read it at our convenience?"

Update: Lew Pitcher found a different copy, also on MIT's servers, that is an unencumbered PDF. Read the rest