How to organize a mission's worth of photographs

Photographs arrive a handful at a time, attached to emails, shared in albums, occasionally sent by text. By the end there are hundreds or thousands of them, with camera filenames, in no order, and nobody remembers which city is which.

The good news is that most of the ordering information still exists. It is just not in the pictures.

Where the order actually lives

A photograph attached to an email is dated by the email. That is far more reliable than the file itself: filenames are meaningless, and the camera timestamp is wrong whenever the phone was set to the wrong time zone — which, for a missionary who has just flown across the world, is most of them.

Which means the single most valuable thing you can do is keep the photographs with the letters they arrived with, rather than pulling them all into one folder. A picture next to the paragraph describing it needs no sorting at all.

Gathering them

Export the mail first. The attachments come out inside the export, still attached to the message that carried them, dates intact. The steps are here.
Then chase the links.Shared albums and file-transfer links are not in the export — only the link is. Download those as actual files now, while they still resolve.
Then the phones. Pictures sent by text to one family member exist only there. Collect them before the next handset.

The iPhone format problem

If the missionary carried an iPhone, most of the photographs are not JPEGs. Apple saves in a format called HEIC, and while it looks identical on the phone, a great deal of software on the other end simply cannot open it — photo-book editors and print shops among them. A family can get all the way to the end of making a book and find half the pictures missing.

There is a second trap underneath that one. Phones very often store a picture the right way up and record the rotation separately, as a flag alongside the image. Software that ignores the flag shows the photograph on its side. This is why a batch of pictures can look correct on the phone, correct in the email, and wrong the moment they are placed on a page.

To avoid it entirely:on the iPhone, Settings → Camera → Formats → Most Compatible. Everything taken from then on is a JPEG. Worth doing on day one of a mission.
To fix it afterwards: when exporting from Photos, choose to convert to JPEG rather than keeping the original. Mac Preview and the Windows Photos app will both batch-convert.
Either way, keep the originals. Convert a copy. A converted file is slightly smaller in quality and you may want the first one back.

Which copy to keep, when there are several

The same photograph usually exists in more than one quality, and the differences matter far more for print than for a screen. Ranked best to worst:

The original, off the phone or out of a shared album. Full size. Always the one to keep.
Attached to an email. Usually close to full size, sometimes gently compressed. Good enough for a printed page.
Through a messaging app. Heavily compressed, often to a fraction of the original. Fine on a phone, visibly soft at the size of a book page.
A screenshot of a photograph. Whatever the screen was. Treat as a last resort.

As a rough rule for printing, a picture filling half a page wants to be at least about 1,500 pixels across, and a full page about 2,500. A photograph that is 600 pixels wide will print, and it will look like it came off a phone screen, because it did.

Duplicates, screenshots and the rest of it

A real mission photo collection is not two thousand photographs. It is perhaps six hundred photographs and fourteen hundred other things, and separating them is most of the work.

Duplicates are harmless, so leave them.If the same letter came out of three relatives’ exports, you now have three copies of its attachments — and one of those three may be the only one that was not compressed.
Screenshots are the real clutter. Chat threads, maps, memes, a bus timetable. They are easy to spot because they are all exactly the size of the phone screen.
Pictures of documents— a visa, a letter, a whiteboard — are worth keeping but not worth printing. A folder of their own.
Do not delete anything during the first pass. Move things out of the way instead. Judgment about what matters improves enormously once the whole mission is in front of you.

Video and voice recordings

Missionaries send these more often than families expect, and they are the easiest thing to lose because nothing is built to receive them. They will not go in a book — a page cannot hold a video — but they are frequently the only recording anybody has of what that person sounded like at nineteen.

Pull them out while you are gathering everything else, put them in a folder beside the letters, and back them up the same way. Name them with the date of the message they came with, because a video file called IMG_4417.MOV tells you nothing at all in ten years.

A folder scheme that survives

If you are sorting by hand, sort by time, not by subject. Subjects are a matter of opinion and you will disagree with your own scheme in a year; dates are facts.

One folder per area or transfer, named so it sorts correctly: 2025-08 Dar es Salaam, not Dar es Salaam.
Inside, leave the files alone. Renaming hundreds of photographs is a week of work that helps nobody.
Keep one folder called something like unknown and do not fight it. There will always be some.

Working out where each picture was taken

This is the part that looks impossible and is actually mechanical, and it is the one job where the letters do the work for you.

A mission is a sequence of areas with dates attached. Somewhere in the weekly letters is a sentence announcing each transfer — they are easy to find because they all sound the same, and they are nearly always in a letter written within a day or two of the move. Read forward through the letters once, writing down nothing but the date and the place name each time one appears.

What you end up with is a short list: a dozen or so lines covering two years. And because every photograph attached to an email already carries the date of that email, that list assigns almost every picture in the collection to a place, without anybody having to recognize a street.

Read the letters in order and note each transfer: the date and the new area.
Turn it into date ranges — one row per area, from the day they arrived to the day they left.
Sort the photographs by date and cut them at those boundaries. Every picture between two dates belongs to the area between them.
Fix the handful that are obviously wrong by eye. A zone conference or a holiday will have put them somewhere else for a week.

Doing this once, early, is worth more than any amount of sorting by subject afterwards — and it is the same list you will want if anybody ever makes a book out of it, because the areas are the chapters.

Write down the names now

The thing that genuinely disappears is who people are. Faces stay recognizable; names go within a couple of years, and the missionary is the only person who knows them.

Sit down with them in the first month home, go through a few hundred pictures, and write names into a plain text file next to the folder. Not a database, not a tagging system — a list. An afternoon now saves information that is otherwise unrecoverable.

Two copies, two places

One copy is not a backup. A cloud account plus an external drive, or two drives kept in different houses. The photographs and the letters should travel together, because separated they are much harder to make sense of.