The Latvian Soviet Socialist Republic was a republic of the Union of Soviet Socialist Republics.
The Third Doctor Adventures is a Big Finish Productions audio play series based on the TV show Doctor Who .. Big Finish Productions. Big Finish Productions. audio play. audio play. Doctor Who. Doctor Who. Third Doctor. Third Doctor. It sees the return of Katy Manning as Jo Grant and Richard Franklin as Mike Yates , while the voice of the Third Doctor is performed by Tim Treloar as the original actor Jon Pertwee is dead .. Katy Manning. Katy Manning. Jo Grant. Jo Grant. Richard Franklin. Richard Franklin ( actor ). Mike Yates. Mike Yates. Third Doctor. Third Doctor. Jon Pertwee. Jon Pertwee. The first set of stories was released in September 2015 .. A second and third volume have been announced for release in 2016 and 2017 .