The Type Heritage Project [THP]:
Dynamo, MSJ 1892
The Type Heritage Project [THP]:
Dynamo, 1897 ATF Chicago
The Type Heritage Project [THP]:
Dynamo, ATF NY 1897
The Type Heritage Project [THP]:
Dynamo, ATF 1900
The Type Heritage Project [THP]:
Dynamo Patent Exhibit, 1891
The Type Heritage Project [THP]:
Dynamo Patent Affidavit, 1891