Sent from QCloud I decided to look it up. It appears to be 28 years which means I am comfortable reading The Command to Look in pdf format. http://en.wikipedia.org/wiki/Copyright_law_of_the_United_States#Major_Amendments_to_U.S._Copyright_Law Copyright Act of 1909 - extended term to 28 years with 28-year renewal Regards Peter Its worth being aware that different jurisdictions have different rules in relation to this. It may be perfectly legal for some-one to put a copy of a book or document online in their own country, but still be illegal for you to view or download it in yours. My 2c on that issue. On the substantive issue of composition, I think analyzing the composition of images with a view to discerning some profound overarching, underlying deep structure has much in common with fortune telling. That is many very general statements appear to be giving much more specific advice than they in fact do. If you look at some general purpose web archive like flickr you can apply rules of composition to a large collection of images, and see if the rules are effective at separating the strong from the weak images. having said that Mortenson is still interesting to read, as is John Alton's "painting with light", also available online but definitly not legal for US citizens to download or view, hence no link from me. All the best Laurence Cuffe. On 26 July 2013 12:46, <carlileb@xxxxxxx> wrote: 95 years if the copyright was renewed. But if a book was published before 1964 and the copyright was not renewed, it only remained in copyright for 26 years. I suspect this book wasn't renewed. Mortensen for some reason is huge right now. Even his International Photography magazine plates are getting bucks. I think he did a lot of junk, personally. But his fights with Ansel Adams in Camera Craft are fun to read.