Free telephone directory.....

He's listed on the BP directory It says "as low as 5%" though so I'm guessing there's a catch .Also one of the BP accounts associated is closed ..https://www.biggerpockets.com/co/peter-tom-llc

There's a directory of such here on BP.

maybe the phone directory could help if one could predict which city they live in

Check directories.  

Many listed in the BP directory. 

@Matt MorganYou can find hard money lenders on this directory: https://www.biggerpockets.com/hardmoneylenders

You will do much better with syndication directory sites like Zillow and Trulia.

We added the site to our Bank REO Directory

Check out their Facebook account - look up the docket directory in their county and name for criminal activity .