Do you want to read some more about his work? The library has the ebook Wrightscapes, which pays particular attention to site planning, landscape design, community scale and regional planning. The authors include many original diagrams, rare archival material, and some 200 photographs and site plans, many never published before, detailing Wright's residential and public work and his urban design initiatives
A new section to cover different construction materials. Let me know if you have something useful to add.
Bob is managed by Learning Onscreen. As well as providing access to many progammes aired post 1950, it provides curated playlist such as any shown below (I will add to the list as I come across them).
There are also many playlists created by academics around the country. When searching enter your topic and select playlist, before pressing search.
e.g there are currently 7 lists using the search phrase "landscape design".
YOUTUBE
Here are some channels you can subscibe to: