File:HECOX, C.W. INSTRUCTOR IN MACHINE SHOP, D.C. PUBLIC SCHOOLS. SUPERVISING MFR. OF PRACTICE SHELLS FOR NAVY, AT McKINLEY TRAINING SCHOOL.jpg
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![File:HECOX, C.W. INSTRUCTOR IN MACHINE SHOP, D.C. PUBLIC SCHOOLS. SUPERVISING MFR. OF PRACTICE SHELLS FOR NAVY, AT McKINLEY TRAINING SCHOOL.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/HECOX%2C_C.W._INSTRUCTOR_IN_MACHINE_SHOP%2C_D.C._PUBLIC_SCHOOLS._SUPERVISING_MFR._OF_PRACTICE_SHELLS_FOR_NAVY%2C_AT_McKINLEY_TRAINING_SCHOOL.jpg/800px-HECOX%2C_C.W._INSTRUCTOR_IN_MACHINE_SHOP%2C_D.C._PUBLIC_SCHOOLS._SUPERVISING_MFR._OF_PRACTICE_SHELLS_FOR_NAVY%2C_AT_McKINLEY_TRAINING_SCHOOL.jpg?20191110233857)
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