body: I am doing a YouTube video about the history of deep sea exploration. I want to show pictures from a 1934 book and I came to the conclusion that the book is public domain because of lack of copyright renewal in the US Copyright Office archives (thanks again to David Siegel for showing where to look in his terrific answer and even better comments!), and also because other people have already taken the effort, among others the Forgotten Books editors who are selling a reprint, and The Internet Archive who holds a scanned copy free for anyone to download.
  
  
  Now, can I show the pictures inside that book? There is no additional copyright notice at the foot of any of them. All you can see in the book is the following 'courtesy note' at the beginning:
  [![enter image description here](https://i.stack.imgur.com/v6StM.png)](https://i.stack.imgur.com/v6StM.png)
  
  
  What now?
  
  
  **EDIT** The author did the last (and only) copyright renewal in 1951.
  
  
  
title: Are the pictures inside an old book that became PD because of lack of renewal, also PD?