Dropbox saves a history of deleted photos, videos and files for 30 days. So you can restore any file or folder deleted in the last 30 days. If you want to find deleted photos, videos or files, Go to https://www.dropbox.com/ & sign in to your account. If you are a Dropbox for Business user and have connected your personal and work accounts, remember to choose the right account from the bar on the left side. Go to your Dropbox folder or any sub folder and click "Trash can" icon located above your list of files near the search box. Now you can see all deleted files in a gray color. Right-click on a deleted file or folder and select 'Restore' option from the pop-up menu.