New Hampshire Bankers Ass'n v. Nelson

How later courts describe this case

• holding that a radio installed in a locomotive to provide two-way communication between the engine and yard employees was an “appurtenance” within the meaning of the Boiler Inspection Act.
• the fact that one acts in the capacity of an independent contractor does not preclude a finding that a work was done for hire
• additions “too insubstantial” to induce owner to share copyright
• radio; no ICC rule implicated
• no contractual relationship between parties
• the “Three Little Pigs” case