1. Chf., Hydr. Analysis Branch, Hydraulics Div., U. S. Army Engr., Waterways Experiment Sta., Vicksburg, Miss.
2. Chf., Analysis Sec., Hydr. Analysis Branch, Hydra ulics Div., U. S. Army Engr., Waterways Experiment Sta., Vicksburg, Miss.
3. Hydr. Engr., Hydr. Analysis Branch, Hydraulics Div., U.S. Army Engr., Waterways Experiment Sta., Vicksburg, Miss.