Presently (one month from now), a promising new resource for all of us: 43 short chapter entries which display how creative camera workers prepare for executing their visual ideas (as in these illustrations).
http://photographersketchbooks.tumblr.com
( These examples are taken from a 1977 issue of Creative Camera magazine. I don’t know if these workers are included in the book, but for the remaining time until the release date, there’s a Major Award for the first person to identify correctly whose sketches these are.)