Building trucks and train cars for a transportation project, 1927 First photo: First grade students building cars for a truck, as part of a project on "How Food Comes to the City". The transportation unit correlated history, geography, manual training, and science (growing plants) from the 1904 curriculum onward. Second photo: Closeup The signs on the blackboard read : How Food Comes to the City: Truck, Boat, Train, Wagon, Airplane, Bus Safety Signals on Roads: Hill, Detour, Curve, Danger Railroad Crossing Signals: Gates, Bell, Sign, Mark on Road, Flagman, Lights Signals for Boats: Lighthouses, Beacon lights, Buoys, Flags Third photo: Five boys with the train the class built. Fourth photo: Location: Blaine 187 Teacher: Nina Jacob, teacher, 1922-61, March 16 Archive: # 237a