https://www.imdb.com/title/tt0048215/
https://en.wikipedia.org/wiki/It_Came_from_Beneath_the_Sea
Apparent "book" Will is reading from at beginning of episode is false:
It is a sheet of paper with "Legend Of The Shadow World" printed on it and
placed across a book.
However, if you look
close enough at lower right of photo, you will actually see "Zach" in the text.