Xrefer (commercial) — Fee based database of 236 titles and over 2.9 million entries.
Lexis Nexis (commercial) — Billed as the world’s largest collection of public records, unpublished opinions, legal, news, and business information.
UNZ – An odd collection of periodicals and book scanned.US Search (commercial) – Finding people plus background checks on people. Hathi Trust – — a partnership of major research institutions and libraries working to ensure that the cultural record is preserved and accessible long into the future.123 People (commercial) – A multi search engine built around finding people. There are more than sixty partners in Hathi Trust, and membership is open to institutions worldwide.Integrascan – Finding people plus background checks on people. The collection encompasses others such as Gutenberg Press, etc. Books.– They are putting the squeeze on all the book scanning businesses.State of Texas DOT Criminal Background Check – The central background check for felonies provided by the state. – Has background check capability plus a photo reverse lookup. They want to scan the world to add it to the Google Borg. The Online Books Page — A searchable database of more than 28,000 English works with full text available for free online.