Where can I download or view the user guides for the older versions of Photoshop and Illustrator? The new guides are just very basic summaries.

While visiting the Adobe help site, I just realized that the Photoshop and Illustrator user guides are no longer available. Those guides contained complete, technical, and detailed information about the applications. Now, the new guides are very basic for beginners. I'd like to know who has access to the complete Photoshop and Illustrator user guides and why Adobe no longer publishes them.