To send a letter of no more than 6 pages ANYWHERE within the US, you need one first class (42 cents as of May 2008) stamp.
what the price to mail letter to
3 stamps!
The number of stamps that you need to send a letter from Australia to London, will depend with the value of one stamp.
I suppose you need one or two stamps to send the president. But my guess is just one.
3 stamps.
About one liberty stamp :)
one
one
One.
3
3
2