Digital surrogate of poster: 'Be a House to House Collector. Please sign up here. Oxfam 50th Anniversary Week 1-10 October. It's time for a fairer world', with silhouette of people walking down steps carrying baskets and water jugs. Black, yellow and green background, black, yellow and white text. Part of Oxfam's 50th anniversary: It's time for a fairer world series.