Smithsonian National Air and Space Museum: You CAN do daytime astronomy!
Smithsonian National Air and Space Museum: It all started with Galileo
Smithsonian National Air and Space Museum: Smithsonian Astrophysical Observatory
Smithsonian National Air and Space Museum: Increase and Diffusion of Knowledge
Smithsonian National Air and Space Museum: What's this funny looking contraption?
Smithsonian National Air and Space Museum: Venus has phases like the Moon
Smithsonian National Air and Space Museum: Solar Prominence - Public Observatory