I'm changing my starter and I cannot find the second bolt, please help!!?

I have 1999 Buick lesabre I need to replace my starter, I know that there are two bolts I need to unscrew to get it out (not including the battery connects) I can see the fist one on the bottom of the starter, I can not find the second one. Does anyone know where I should be feeling/looking? top/left/bottom right/ ect.? Thank you for your help!