I need to where I can find a blower for a Janitrol Unit Model# GE30-10 or AE30-10, Serial #9710933386 . Your help would be greatly appreciated

Are you looking for a blower motor OR the entire blower assembly? And if you need the assembly what happened to the original? Also I do not see your model number listed in my book. Are you sure of the model numbers?

I need blower motor. Made by GE B13400-602A or 602AS ECM programmable Motor

A ECM programmable motor system is NOT user friendly. You really need to know your business when replacing one of those along with how to set the programer. Various tools and the knowledge of how to use them are also necessary for a proper install. You might check on Ebay for the part or contact your local Goodman/Janitrol dealer.
NOTE: These parts are VERY expensive to replace and can be damaged by misapplication. Also note that there is NO warranty if installed by a homeowner so it might be best to contact a local professional for the install.