Magneto Phone Identification- Trying to find out what these are.

[Hill Haven Telephone Company]

My neighbor has these,  I know what the 302 is in the pic but the other phones i havent a clue what they are.

The one box near the 302 has an AC cord coming out of it

Any ideas? 

[HowardPgh]

I wonder if one of those boxes is a crystal set (radio), I see a pair of headphones in the picture.

[Jon Kolger]

The wooden triangular box with the articulated arms, right behind the 302, is a resonator for a telegraph sounder.  I can't tell from this angle if there is actually a sounder mounted inside.