Ella Thomas

On verso: Miss Ella Thomas, Schoolcraft, Mich. Class of '75, U. of M., Randall, 220 Woodward Ave., Detroit

The creators of the age of steel.

Introduction. - Sir Henry Bessemer. - Sir William Siemens. - Sir Joseph Whitworth. - Sir John Brown. - Mr. S.G. Thomas. - Mr. G.J. Snelus.