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https://www.christies.com/zh/lot/lot-6394463 PATRICK HERON (1920-1999), YELLOW OVAL (BROWN) : OCTOBER 1959 | Christie's YELLOW OVAL (BROWN) : OCTOBER 1959 patrick heron october 1959 1920 1999 yellow https://commons.wikimedia.org/wiki/Category:October_1959_in_France Category:October 1959 in France - Wikimedia Commons 1959 in france category october wikimedia commons https://commons.wikimedia.org/wiki/Category:October_1959_in_Switzerland Category:October 1959 in Switzerland - Wikimedia Commons 1959 in switzerland category october wikimedia commons https://archive.org/download/sim_datamation_september-october-1959_5_5/header/ sim_datamation_september-october-1959_5_5 directory listing october 1959 sim datamation september directory https://commons.wikimedia.org/wiki/Category:October_1959_in_Greece Category:October 1959 in Greece - Wikimedia Commons october 1959 category greece wikimedia commons https://archive.org/download/sim_datamation_september-october-1959_5_5/ sim_datamation_september-october-1959_5_5 directory listing october 1959 sim datamation september directory https://www.fws.gov/media/comittee-urges-continuing-fishery-research-aid-human-well-being-october-21-1959 Comittee Urges Continuing Fishery Research as Aid to Human Well-Being October 21, 1959 | FWS.gov