Dick Blick Art Supplies - In business since 1911 selling oil paints, pastels, brushes, easels and much more. No pictures available as they don't allow anyone to use their pictures. Sale going on now for 20%-55% off selected items. Free ground shipping for orders of $69 or more. They also have video lesson plans.
Oils By Nature - Located in Ohio. Sells vegetable oils, botanical butters, specialty waxes, organic products, essential oils, cosmetic ingredients, and sample sets. They provide a technical library and glossary of terms. You can also sign up for a monthly newsletters telling about upcoming sales and new products.
Fiddlers Creek Designs -- Selling on Etsy since 2008 with over 6000 sales! Find buttons to cover, bar pins, adjustable rings, paper clips with glue pads, alligator clips and more!
Fine Art Store -- A complete source for beeswax, damar, wax medium, encaustic wax paint, and specialty tools for encaustic painting. Brushes, paints, canvas, stretcher bars and much more. They also have a newsletter for alerting about sales and new products. Check out their library of How To Videos you can view online. The also have a blog you can visit for current news.
Handmade Papers -- Over 3000 varieties of handmade and specialty papers. These folks are wonderful to work with. They will give you wholesale or sales prices which every is less. They have a free gallery for paper projects by customers. They offer custom dye-cuts and paper cutting as well. A fun site to visit!
Aroma Haven and Rustic Escentials
They were in the source list under lip balm tubes so I corrected the info and put their company name. They offer candle supplies, air fresheners, packaging, lip balm supplies, and more. Sign up for their newsletter!