for the US airports, try NACO at:
http://www.naco.faa.gov/ap_diagrams.asp
if there is no diagram on there, you will need to resort to non-government issued diagrams.
If you can't find the US ones, leave me a message, and i will see if i have them, and i will scan them.
On the Hidden Lake airport in FL, i am pretty sure it is private.
-IBLB-