Full Citation: Seelye, Katherine Q. "Dan Robbins, Who made Painting as Easy as 1-2-3 (and 4-5-6), Dies at 93." New York Times [online edition]. https://www.proquest.com/docview/2203413442?pq-origsite=primo&parentSessionId=tnw6voHPS658J4KM%2B%2BdVPcSQT2%2BsUvYO4l12YSNK%2FwY%3D (April 5, 2019).
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