Notes
1 For those wishing to explore, most of them, with my annotations, can be found here: https://www.diigo.com/outliner/4232ob/Lovelace-and-Babbage--Period-Documents. I caveat that many of the Google Books scans are unfortunate victims to copyright claims which have broken some of my links, despite clearly being in the public domain.
2 Much like Babbage did, I found it difficult to convey the Engine's operation in still images. Babbage devised a mechanical language for the purpose; I found the most effective way to explain it to be animation. Several videos explaining functions of the machine can be found at youtube.com/sydneypadua.