The Type Heritage Project [THP]:
Scanned Specimen, Ornamented No. 1542
The Type Heritage Project [THP]:
Ornamented No. 1542, Bruce TF 1901
The Type Heritage Project [THP]:
Patent Specimen, Ornamented No. 1542
The Type Heritage Project [THP]:
Patent Affadavit, Ornamented No. 1542