Add Caldwell C. Johnson's capsule sketches

http://archive.org/stream/thisnewoceanhist00swen#page/103/mode/1up

Only desaturate 25% to retain the sketch block feeling.
Add images of capsule models from 1958

http://archive.org/stream/thisnewoceanhist00swen#page/104/mode/1up
Merge the two capsule model images
Add image of the capsule drop test

http://archive.org/stream/thisnewoceanhist00swen#page/105/mode/1up