print a contact sheet
When working with film, a contact sheet is a special printout that shows every picture on the roll as a set of negative-sized images. A contact sheet serves as a handy reference to a roll's contents. In Picasa, you can print a contact sheet of any individual folder or label. In the Picture Library, select a folder or label from the Folder List. Choose Folder > Print Contact Sheet (). The Preview/Print Layout screen appears.