10-10-2011 04:35 AM
Most likely the free copies are digitized. They are readable, but may have a lot of typography errors from the scanning process. You might enjoy either of the following, the first is the complete works, the second is the best-known works. Both include the two tales you mention. Both are 99¢.
10-10-2011 03:50 PM
I'm with Desert_Brat - they look to be scanned copies. You'd do better to get the ones mentioned above or even the BN Classics Series version for $3.99.