Jeff Shaumeyer"Glass Stratum" (1967), by Robert Smithson, (one with Isaac as thoughtful onlooker, and two detail photos) in the East Building of the National Gallery of Art, Washington, DC. 20161127<br> <a href="https://pixelfed.dk/discover/tags/nationalgalleryofart?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#nationalgalleryofart</a> <a href="https://pixelfed.dk/discover/tags/eastbuilding?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#eastbuilding</a> <a href="https://pixelfed.dk/discover/tags/nga?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#nga</a> <a href="https://pixelfed.dk/discover/tags/myngadc?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#myngadc</a> <a href="https://pixelfed.dk/discover/tags/sculpture?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sculpture</a> <a href="https://pixelfed.dk/discover/tags/art?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#art</a> <a href="https://pixelfed.dk/discover/tags/20thcenturyart?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#20thcenturyart</a> <a href="https://pixelfed.dk/discover/tags/glassstratum?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#glassstratum</a> <a href="https://pixelfed.dk/discover/tags/RobertSmithson?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#RobertSmithson</a> <a href="https://pixelfed.dk/discover/tags/SJB?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#SJB</a> <a href="https://pixelfed.dk/discover/tags/IGMem?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#IGMem</a>