Grover frame with wheels and control console structure.

Grover frame with wheels, control console structure, seat frames, and battery boxes.

Closeup of Grover seat frames and control console structure.

Closeup of Grover seat frames with control console structure and battery boxes.

Rear view of incomplete Grover.

Front view of incomplete Grover; note USGS Explorer and General Motors Mobile Geological Laboratory parked in background.

Front view of Grover painted and with seat webbing, floor plates, and other components installed.

Rear view of Grover painted and with seat webbing, floor plates, and other components installed; completed control console visible.

Elevated rear angle view of Grover painted with seat webbing, floor plates, and other components installed; control console and early-design control handle and rear deck visible.

Rear oblique view of Grover with William Tinnen (left) testing control handle and arm rest and Putty Mills in right seat.