google “dc recorder of deeds” – click the first link in the list, dc office of tax and revenue. on that page, click document images, and then online public records. It says it has data from 1921 onwards, and i realize you are looking for 1913 or 15, but this will at least give you information from the earliest deed in the online system. You will probably have to take that information and go to their office and look up the earlier deeds in the actual books.
You can also try looking for real estate ads in online historical newspapers. my sister found the ad for our house, back when it was first built. the library of congress has a lot of these papers online.