You cannot talk about "The Big Book Of By Dian Hanson.pdf" without understanding that this is a series of books. The most famous titles include:
Why "Lifestyle and Entertainment"? This is the clever marketing tag. To the uninitiated, these are pornographic compilations. To the fan, they are historical records. Each volume contains hundreds of photographs spanning the 1920s to the 1990s. You get vintage pin-up, glamour shots, magazine clippings, and often hilarious, dated advertising.
The "lifestyle" aspect comes from the context. Hanson writes extensive captions explaining why a certain body type was popular in the 1940s vs. the 1970s. She discusses the invention of the push-up bra, the impact of nylon stockings during WWII, or how fitness culture changed the aesthetic of the female form.
A crucial note for the discerning lifestyle enthusiast: Most of these books remain under copyright by Taschen GmbH. While searching for "The Big Book Of By Dian Hanson.pdf --BEST lifestyle and entertainment" may lead to fan-shared scans, purchasing the digital edition directly from Taschen (via their app or Amazon Kindle) ensures the artists, photographers, and Hanson herself are compensated.
That said, many out-of-print editions are impossible to find legally. In those cases, second-hand PDFs circulate in private collectors’ forums. Use your judgment: if you love the content, buy a used physical copy to support the secondary market.
You specifically asked about the PDF. In the world of collectors, physical copies of these books are massive (literally—they are "XL" format) and expensive ($40–$200+). Consequently, the digital PDF has become the democratized version.
Searching for “The Big Book Of by Dian Hanson.pdf” usually leads to:
The Risk: Be careful. While Dian Hanson’s work is protected as art and publishing, many PDFs floating around are low-resolution scans that ruin the photography. Worse, some file names hide malware. If you love the work, buy the physical book; if you want a digital preview, stick to recognized digital retailers like Taschen’s official app or Google Books previews.