We owe Julia Serra a thank you for providing links to two books that include references on the topic of Skate liver oil. Both books include writings on the topic of cod liver oil.

I was introduced to skate liver oil by a old Russian fisherman. He told stories of 'magical ' healing from the sea including skate liver oil.
Based on his input I knew that skate liver oil was important to provide for many in the community. I made the decision that the oil was important based solely on the stories told and began my work to bring the product to market.

Many doctors and members of the community have appreciated the Skate liver oil but I had found little written on the topic. Julia located two on-line books below with references from the mid-1800's (my favorite medical writing period). Enjoy the reading!

http://tinyurl.com/5zdxpb start on page 549 +/-. the reference to skate liver oil is located in a couple spots. i think around page 553

http://books.google.com/books?ei=78gvSPd0he6xA9rXwfEC&q=skate+liver+oil+health

ps, All writing/work on the subject of CLO prior to 1850 +/- would reference a product nothing like the heavily processed oils of today.