> You might try googling "square $COMPANY logo" or other
similar things.
> ...
Yeah I had been having a rough time finding good ones with google, but I
had much more luck once I started using google's advanced search
settings to configure the type as "clip art", the aspect ratio as
square, and the filetype as png.
I've had pretty good luck searching for company "icons" rather than
"logos". I think that pretty much implies square, but I guess the
resolution might not go up that high (I didn't really care that much
about the resolution though).
Aurimas