The Memorial Album (MA) is a set of entries that need to be filled out in order to be completed. Upon completion, a reward can be received from an influential person. Entries can consist of food, trade goods, crafted items or items found from adventuring or dungeoning. Items bought from NPC's count, but entries cannot be completed by buying an item from another player or picking up such item that another player has discarded.
The old MA page can be found here: Memorial Album - Classic Version
The links below lead to the Memorial Albums that exist in each category.