Iphoto library disappeared

osx 10.9.4

Iphoto ver. 9.5.1 902.17

I added several hundred photos yesterday.

Then Ran time machine over night for the first time.

the library disappeared today. Nothing.

I would like to retrieve the 10K photos or so.

any advice

stevelaudig gmail.com

assume I don't know anything when explaining.

cheers.