The Tiniest Invaders, Book One Coexistence
by William Bebb
Through countless eons, Earth has been visited by a plethora of different alien races. For most, they came for the same reason man still peers into the night sky- curiosity. They came, they saw, they took snapshots, some even picked up a few biological specimens as souvenirs and went home. Only one race of aliens liked Earth enough to stay, until now.