Butler University Libraries have access to the WashingtonPost in a number of our online databases that can be explored at https://butler.on.worldcat.org/atoztitles/journals?issn=0190-8286. We don't currently subscribe to a site license which would allow access to the WashingtonPost website and apps. Butler has site licenses for the New York Times and Wall Street Journal so those newspapers have links and direct information in the A to Z databases.
