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 – 1979 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.