These five pages (original is 14 x 17 inches) from early Hovey-Kelley mouse brainstorming session. The undated page records ideas tossed out during an early mouse design session. The first two pages were folded together, and the last three pages were folded together, suggesting that they may have been from different sessions. The handwriting appears to be that of David Kelley, one of the cofounders of Hovey-Kelley.
Dean Hovey discusses the brainstorming sessions and early work on the mouse in an interview.

How do we get power with mouse
Steve Gibson light pen
Hong Kong pen & board less than $10.00
light pen reflective. looks at grid on page
reflected off a Formica surface
off a piece of paper
attitude control with mouse
played tank

look at fingertip usage
too big for kids
nerfball mouse ? on a mouse
per reads table or grid
can it read the screen. LPSII look
best code grid
omni direction vehicle
skip ball
record on table | wheels with rollers
texture on ball | engraved spiral
mag card on ball | golf ball with mag head
Hp bar ? reader

problems with mouse
ball began to slip
rubber ball lead filled
treads (?) which move on each other
? gauge joy stick with ?
2 man year project / feasibility
Steve Capps - Alice
other than

inductive current
pendulum / accellerometer $500 each integrating twice
tracball / mouse
trackball
film which rolls under itself
balloon implude runs inside
magnetic / film
sound broadcast - mouse that chirps
infrared
