F.C. Angus back from serving in France, posing in a World War I uniform and German helmet.

F.C. Angus back from serving in France, posing in a World War I uniform.

Entrance to Donaldson's Cave in Spring Mill State Park.

Esterlines on the pier in Grand Haven, Michigan.

Porters Cave in Owen County, Indiana.

Porters Cave in Owen County, Indiana.

Porters Cave in Owen County, Indiana.

Porters Cave in Owen County, Indiana.

Workers in Esterline Instrument Plant.

Cataract Falls on Mill Creek in Lieber State Recreation Area in Indiana.

Cataract Falls on Mill Creek in Lieber State Recreation Area in Indiana.

Cataract Falls on Mill Creek in Lieber State Recreation Area in Indiana.