Scenery for Flight Sim A&SD: Houston, TX area. Highly detailed downtown area (which may cause frame rate problems on slower machines). Includes four modes, several airports and dynamic scenery.
Flight Sim IV A&SD scenery: Van Nuys, CA and the San Fernando Valley, California. Includes several airports, freeways, buildings. VNY has hangars and golf course at runway end.
Flight Sim IV A&SD scenery: Eastern Mass. Covers several airports including Hanscom, Marlboro and Norwood. Lots of scenery around Framingham area. Use with default scenery. By Nels Anderson.
FS4/ASD scenery: Clear Lake, California. Try your hand at mountain lake and valley flying. Adds fields and NAVAIDs between San Francisco CA and Mount Shasta.
FS4 ASD Boston, Massachusetts (MA) General Edward Lawrence Logan Int'l (BOS) for FS4 Default Scenery. Includes all runways, terminal buildings, parking garages, and "by-the-book" runway lighting. MOD puts you at runway 22R. By Ronald Bokleman.