Good thing your Imgur pics are large so we can zoom into some details
Spark plugs may have been replaced, definitely the wires since OEMs are black.
I think that's a label indicating the timing belt was replaced, under the large vacuum hose by the "3400" decal.
Upper radiator hose is aftermarket, those are definitely not stock hose clamps.
Power steering belt was replaced, the original one would not have been made in Mexico.
Start an account (it's free) on the Toyota Owners site, you can pull vehicle specs and any dealer service history. It's on Toyota's main site.
