Pennsylvania artist and designer Paula Swisher takes doodling in the margins of old engineering and science manuals to new heights. She began the illustrations using nothing but ballpoint pen and white-out similar to Mark Powell’s envelopes, but soon explored new materials including colored pencil, gouache and other mixed media like thread and cut-out paper. Via email she tells me:
I’ve been using scientific imagery and information graphics off and on in my work. I seem to be drawn to the contrived sense of order that they show. In the drawings mentioned, superimposing bird imagery, hopefully, creates a visual metaphor for our attempts to make sense of our experiences.
You can see dozens more of her bird artworks here.