For decades, the FAA's extremely popular Sectional Aeronautical Chart series of navigational publications has served as the backbone set of aeronautical documents for aviators who fly by external visual reference. These foldable, full-color charts are loaded with valuable aviation data including airport info (runway lengths, lighting, elevation, services available, surface type, etc.); airspace dimensions; VHF and LF/MF navigational facilities (frequency, ID, and channel); landmarks; cities & towns; elevation/topographic info; ATC entities and associated contact/radio frequencies; bodies of water; obstructions; and much, much more.
The Dutch Harbor Sectional covers the airspace over the Unalaska Island area of Alaska's Aleutians West Census Area, including a significant chunk of both the nearby Pacific Ocean and the Bering Sea. Uses the standard 1:500,000 (6.86 nm per inch; 2.70 nm per cm) scale characteristic of sectional charts. Updated annually. An affordable, info-packed source of relevant FAA data that should be a part of every Aleutian aviator's aeronautical arsenal.