An album is the digitized contents of an actual Victorian, Edwardian, Roaring-20s, or Depression era photograph album usually having belonged to a family. Just like photographs, an album is contained in a group and a group consisting of an album can only contain one album. All contents of an album are preserved -- including images of the front and back covers and the binding.
An album mostly contains photographs, but it's possible that an album may contain other visual artifacts that also are preserved. When you click on an album from the list in the left pane, the album's pages will appear here in the Album Viewer. You may then click on any album page and the viewer will update with a closer view of the page and links to view the individual photographs.
A group is assigned and identified by a 5-digit number (for example, group 10038) which then becomes the first part of the name of any photograph uploaded into the group. Each photograph uploaded into a group is assigned and identified by a 3 to 4-digit number (for example, photograph 104) which, when combined with the group number, creates a photograph's full name (for example, 10038-104).
Albums are assigned the same 5-digit number of its containing group. For example, if an album's group is group 10038, the album also will be named 10038. Photographs contained inside the album or related to it are then named in the same way that photographs belonging to a group are named. Because albums and groups are named using the same number, their designations are somewhat interchangeable which is why an album's photographs can also be listed within its group.