This is a Sources Sought announcement for an indefinite-delivery architect-engineer contract for survey, mapping, and related services, primarily at various locations in Alaska. The U.S. Army Corps of Engineers, Alaska District, is conducting market research to identify capable prime contractors. Required services include topographic and hydrographic surveys, aerial mapping, boundary establishment, and the production of Autodesk Civil 3D drawings compliant with specific standards. The NAICS code is 541370 with a $19 million small business size standard. Interested firms must submit a capabilities package by the specified deadline to demonstrate relevant experience.