I have a copy of Jim Evan's "Radio Astronomy" which is something of a classic. Shapiro authored a chapter explaining this experiment in detail. The effect was dramatic and confirmed the predictions of General Relvativity.
The three classical test of General Relativity are (this will be on the test):
1. Deflection of starlight during an eclipse.
2. Graviational redshift of massive stars.
3. Precession of the perihelion of Mercury.
The increased time delay in radar returns as the interior planets move behind sun is the fourth "classical" test of General Relativity. BTW, some space track radars account for Special Relativity when calculating Doppler shift, although many of the people building and programming them are not aware of this fact. The effects of Special Relativity are just on the edge of being detectable in space track radar. There should also be a very tiny effect due to Special Relavitity, but as far as I know no one worries about it.
Here's an interesting tidbit about Einstein's life: he performed poorly in the public schools.
ping
BTTT
Has the Nobel Society heard about this Einstein guy, yet?