A fabulous view captured by Neil Armstrong from one of the windows of the Command Module Columbia following transposition and docking of Columbia and the LM Eagle at a distance of about 18,700 km or 10,100 nautical miles.

The Earth is half obscured by the structure in darkness of the Lunar Module Eagle still attached to the SIVB stage and docked to Columbia, showing the US and Canada on the left, Greenland at the top, Western Europe and North Africa on the far right.

From the mission transcript when the photograph was taken:

003:53:05 Armstrong:

And Houston, you might be interested that out my left-hand window right now, I can observe the entire continent of North America, Alaska, over the Pole, down to the Yucatan Peninsula, Cuba, northern part of South America, and then I run out of window.