60+ Pages Ebook About A Hobby

I need an information/guide/how to ebook written about the hobby topic. Writer will need to research the content by own. I'm looking for 15,000-20,000 words, 60+ pages. I will provide the outline with main chapters but expect to expand or create more chapters, subchapters. Im looking for long term relationship, will have a lot of similar projects in the future. Only serious bidders, PROVIDE LINKS, SAMPLES OF THE EBOOK YOU'VE WRITTEN OR AT LEAST SOME PARTS OF AN EBOOK. I need to see that you are experienced in ebook writing, prove it to me.