A piece of yellowed paper. On the left top corner:

Title: Brainley's Notebook

On the right top corner, in a handwriting font:

Brainley: Pg 41

Brainley: 2009-05-29

Brainley: Temp 296 K

A sketch in blue pencil of a weasel with shifty eyes and a cylinder about its size (but a little smaller) strapped to its back. The cylinder has a radiation warning logo on it.

And the following notes to the left of the sketch, also in a handwriting font:

Brainley: NUCLEAR WEASEL

Brainley: An aquatic creature, the nuclear weasel traditionally builds its nest in the cooling towers of nuclear power plants. Nocturnal; night vision is aided by the fact that it glows bright green. First observed in Alameda.