1881-1966 1885-1962 1940- 20thcentury computers congresses coralreefsandislands dancephotography digitalmedia engineering environmentalaspects ethnology exhibitions exhibitionsschatz frank history howard howardbarry hurley imagingsystems juvenileliterature marineanimals marineorganisms marinephotography ocean opticalproperties other(philosophy) overfishing photography photographyofmen photographyofthenude pictorialworks reference research saltwaterfishing schatz socialaspects technology travel underwatercinematography underwaterexploration underwaterimagingsystems unitedstates visualanthropology water wildlifephotography williamson