He maintained Colonel Grants book was a reasonable source. 저는 예일대의 말콤 코맥과 옥스퍼드의 엘리스 워터하우스 경 교수에게 레프리에의 좋은 사진을 보냈습니다. By now I had discovered it was definitely a copy of a Van Goyen, listed in the standard work on him by HansUlrich Beck.