- Zecchi(Florence): Of special interest are their sable brushes, sun-thickened oil and dry pigments.
- Cornelissen (London): My favorite bristle brush suppliers.
- New York Central (NYC): Good all-around supplier, I like their sketchbooks a lot (Kunst & Papier No. 1003 13).
- Sinopia (San Francisco): Kremer supplier on the west coast (see below).
- Kremer (Munich and NYC): Most of the good supplies in other shops come from here. You save a lot buying from the Munich shop.
- Da Kat Windmill (Holland, 30 mins from Amsterdam): Old windmill where they still grind pigments with wind power. Great pigments for sale in the small shop in the back.
- Dick Blick (Online) Good online supplier, the ‘Silver’ brushes are really nice to work with, as are their name-brand bristles.
- Ray Mar art (Online) I use their plein air panels from time to time.
- New Traditions (Online) More excellent artist panels.
- Blue Ridge Oil Paint (Online) Very good hand-ground oil colors, especially the cadmiums.
- M. Graham Artist’s Colors and Mediums (Online) Excellent artist’s oil paints, ground in walnut oil.
- The Florence Academy of Art: Where I currently teach landscape courses in the Spring.
- The Grand Cenral Academy of Art: New traditional art school in NYC
- The Met (NYC)
- The Getty (L.A.)
- Mauritshuis (The Hague)
- The Frick (NYC)
- National Portrait Gallery (Washington)
- National Portrait Gallery (London)
- Russian Museum (St. Petersberg)
- Tretyakov Gallery (Moscow), my personal favorite.