Footprints on Sand: a Literary Sampler is a 1981 collection of writings by science fiction authors L. Sprague de Camp and Catherine Crook de Camp, illustrated by C. H. Burnett, published by Advent. The collection was compiled to celebrate the de Camps' appearance as joint Guests of Honor at the June 12–14, 1981 X-Con science fiction convention in Milwaukee, Wisconsin and was limited to 1000 copies. An ebook edition was issued by ReAnimus Press in February 2021. Source: Wikipedia (en)