Boxes are excellent at storing books and remarkably bad at revealing them.
A move, renovation, inheritance, or shortage of shelving can put a substantial part of a library into cardboard. The usual labels help at the level of category: BOOKS - HISTORY, BEDROOM BOOKS, FICTION 3. Then someone needs one particular book, and the difference between "history" and "the history book I need tonight" becomes important.
The obvious answer is to make an inventory. For a temporary storage problem, that can be an absurd amount of work. There is a lighter method: photograph the books before they go into each box, then give the photographs the same identifier as the box.
Photograph first, pack second
The timing matters. A photograph of the inside of a packed box is usually close to useless because only the books at the top are visible. The record needs to be made while the spines can still be read.
Before filling a box, group the books that are about to go into it and photograph them with their spines visible. They can be standing on a shelf, laid out in rows, or arranged in any other way that produces clear text. Then pack those books into the box they correspond to.
If one box requires several photographs, keep the naming obvious: BOOKS 07 - 1, BOOKS 07 - 2, and so on. All of those images should point back to the physical box labeled BOOKS 07.
Use a box number, not a description you will reinterpret later
Descriptive labels are useful, but they become slippery. "Literature" may mean novels in one room and novels plus criticism in another. "Office books" describes where a box came from, not necessarily what is inside it.
A stable identifier is harder to misunderstand. Number the book boxes, put the number somewhere visible on more than one side, and use exactly the same number in the corresponding image name or description. Add a subject description if it helps, but let the number do the locating.
For example:
BOOKS 01 - classicsBOOKS 02 - art and architectureBOOKS 03 - fiction
The subject is a hint. The number is the address.
Make the photographs searchable
A folder full of box photographs is already better than memory, but searchable text makes it much more useful. Shelf Scan can save shelf images in its Library and use OCR to search the visible text on the books.
Suppose The Leopard is needed after the library has been packed. Searching the saved images for Leopard or Lampedusa can surface the photograph containing that spine. The image label then tells which box to open.
The photograph does not need to become a bibliographic record. Its job is to preserve a route from the remembered book to the cardboard container where the book currently lives.
The method is especially useful when storage lasts longer than expected
Temporary book storage has a habit of becoming less temporary. A move is delayed. The new shelves have not arrived. One room remains under construction. Boxes intended to be opened in two weeks are still stacked against a wall four months later.
That is when memory degrades. At packing time, it may seem impossible to forget that the Russian novels are in the small box under the desk books. After dozens of boxes have moved twice, that confidence is difficult to reconstruct.
A quick image survives the rearrangement better than the packing-day mental map.
Keep the physical storage legible too
A perfect image record cannot help much if BOOKS 07 is at the bottom of an unmarked stack. If the boxes will be stored for any length of time, keep the labels visible and avoid making the numbering system depend on the original order of the stack.
If boxes are split between locations, the location can be added to the record: BOOKS 07 - garage or BOOKS 12 - storage unit. There is no need to record more detail than the situation requires.
Retire the record as the library comes back out
This is a snapshot, not a permanent catalog. Once half the books in a box have been unpacked, the old image is no longer a trustworthy representation of what remains.
That is not a defect. The system only needs to outlive the period when the books are inaccessible. Delete or replace stale images as boxes are emptied, and let the normal library take over again.
A packed library does not need a new lifelong information system. It needs a temporary map good enough to prevent a particular book from vanishing into cardboard.
A relevant Ulix tool
Shelf Scan
Shelf Scan can keep searchable photographs of visible book spines in its Library. For boxed books, photograph the books before packing them and label the saved images to match the physical boxes. Later, searching the recognized spine text can point back to the box that contains the wanted title.