Are there any good Earth maps that aren't big?

[Badtz Maru]

I've been looking for a good Standard sized Earth map to modify for a post-apocalypse mod I'm working on, and not having much luck...all the Earth maps I've seen are Huge or bigger, and I need something smaller. I would give mapping credit to whoever created the map, though I plan on editing it drastically to reflect lower sea levels and climate changes. Creating a map from scratch is a bit beyond my ability at this time.

Could anyone suggest a good map to start with?