Last week, WWE Network added classic episodes of Stampede Wrestling, however the episodes have since been pulled from the Network.
According to PWInsider.com, the episodes might have been pulled due to a licensing issue with Bret Hart. While WWE owns the rights to the Stampede library, Bret Hart owns the rights to his matches as they were transferred to him before his parents passed away. This would mean WWE needs to license the footage from Bret before it can air on the Network.