Audio, video, and written files for 2010-2017 are available. We are working diligently to get previous years also.  We have received and hope to publish the 1975 and 1980 lessons and 2 of the 1979 lessons very soon! Please let us know if you have 1972 Р1979 you can share. Also, we will work to get video from past lessons loaded as quickly as possible, but please understand this is a very slow process.