I have spent 2 days at the Denver Botanic Gardens enjoying the marvelous Henry Moore sculpture exhibit. It is up till next January so I look forward to seeing them as the seasons change. It is early spring now so I was most interested in drawing the trees, before the leaves obscure their structure. I love charcoal and still have a box from my college days in the 1960s. How times have changed; I don't imagine any charcoal is still produced in NY or LA do you?