Retrieve deleted map?

Hi guys!
I've uploaded all my whatsapp pitures from my phone to my pc in one folder.
Now, the folder has dissapeared, and I've lost all the pictures!
Isn't there a way to retrieve the photos again? Since they have been downloaded by Airdroid once?
I would be really sad if they are lost forever!

Thanks for your help!

Hi Anniek93,
Have you deleted the folder? If no, you may try to search the folder in your computer to see if you can find it.