Gelman and Hill's Data on Effects of Child Support Enforcement
I just faced the same problem and found the solution:

Use this code in R:

input Stata file

library(foreign) 
child &lt;- read.dta("C:\child.iq.dta")

Code found here:(https://www.statmethods.net/input/importingdata.html)

You need the double " \ " if you're using R. 
read.dta("    ") Type the exact folder with data ending. Be careful to use common characters, otherwise R could have problems finding the folder. In my case I just saved the files on C:\.

This way you can access all Data.

I'm using the latest R-Studio version.

I hope I could help you!