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Subjects
- College teachers3
- Graphs[remove]3
- blueprints (reprographic copies)3
- Account books2
- Charts (graphic documents)2
- Electrical engineers2
- Financial records2
- Inventors2
- Maps (documents)2
- Notebooks2
- Notes (documents)2
- Patents2
- Photographic prints2
- Photographs2
- Reports2
- Scrapbooks2
- Abstracts (summaries)1
- Advertisements1
- Agreements1
- Aniline Dye1