Don't know if they are cool or not...but there are some very nice MLB original logos at
www.ootplinks.com.
See them in the Eugene Church Collection.
They give me credit as the compiler...but it was dbacks who did the compiling...He, Markmeister, Shub and knuckler designed the 80 logos...a few are MLB logos.
Go to
www.logoserver.com for some great logos.
You may have to resize them though.