1946 Public Law 722, signed by President Harry S. Truman, establishes the National Air Museum as a bureau of the Smithsonian Institution.
1948 The Wright 1903 Flyer is added to the National Air Museum collection. The aircraft goes on display in the Smithsonian's Arts & Industries building.
1958

Congress authorizes construction of the new Air Museum building, and President Dwight D. Eisenhower signs Public Law 85-935 approving planning for the new museum. Later, Philip S. Hopkins is appointed director of the National Air Museum.

1966

Public Law 89-509, signed by President Lyndon B. Johnson, amends the
original Air Museum legislation to include the field of space flight.

1971-1975...

National Air and Space Museum Timeline
Before 1976 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009