Series IV. Steamboats Come True: American Inventors in Action, published 1944, inclusive

Steamboats – After Publication – Correspondence [folder], before 1944, inclusive

Offsite-Box: 18 (Material Type: Mixed Materials)

Steamboats (1 of 2), before 1944, inclusive

Offsite-Box: 49 (Material Type: Mixed Materials)

Steamboats (2 of 2), before 1944, inclusive

Offsite-Box: 50 (Material Type: Mixed Materials)

Steamboats [page proofs], before 1944, inclusive

Offsite-Box: 54 (Material Type: Mixed Materials)