between 1949 and 1957

Every mention of between 1949 and 1957 across the entire archive — with clickable timestamps to jump straight to the source.

2 Videos

2 Mentions

2 videos containing this reference

@JesseMichels

1 mention

Well, it's a hundred thousand between 1949 and 1957. The reason you'd ended in 1957 is because

@JesseMichels

1 mention

Palmar Observatory, which is the most prominent observatory. And this was between 1949 and 1957.