The documents in the USDA website support OCR-to-Text so you will be able to search the books using key words and cut and past text to DG posts. Download the books to your computer and keep them as a reference source.
I now start all my Hibiscus seeds using the Demo Method. The only problem with the Demo Method is that it works too well and little Hibiscus seedlings quickly become big Hibiscus seedlings. With seed nicking and a 24 hour soak in warm water, germination times are typically under three days.