National Park Service LEGO Vignettes - In 1880, noted historic preservationist Billy the Kid stoped to camp at the ruins of the Gran Quivira Mission, which is today part of Salinas Pueblo
BrickLink - Set 1880-1 : LEGO XL Bucket [Universal Building Set:Basic] - BrickLink Reference Catalog
LEGO 1880 XL Bucket Set Parts Inventory and Instructions - LEGO Reference Guide