A valve mechanism of a hydrogen balloon
Title

A valve mechanism of a hydrogen balloon

Caption

Illustration depicting a valve mechanism of a hydrogen balloon. Dated 19th Century

Date

19th century

Credit line

Photo12/Ann Ronan Picture Library

Reference

ARP23A12_423

License type

Rights managed

Available size

180,0Mb (11,1Mb) / 27,9in x 25,1in / 8365 x 7521 (300dpi)

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