If only there was a big search box at the top of the page with a pointing at it...

I am trying to get the following autographs:
Julie Andrews
dick van dyke
gavin lee used the abrams artists agency address and it came back.
can anyone help me. it is for a youth production of mary poppins we are doing.
also:
Ashley brown, bob Crowley, laura michelle Kelly, matthew bourne, and Stephen mear.
thank you