A mission book glossary is a short list of unfamiliar terms and what they mean in the letters. Use one when recurring abbreviations, local expressions, or organizational terms would otherwise interrupt a family reader.
You do not need to explain every ordinary word. Start with terms a reader outside that time and place would struggle to understand, then keep the explanations brief.
Collect terms while reading
Read a few letters from different periods and make a note whenever you have to ask what something means. Include abbreviations, recurring local terms, and words the writer used in a special way.
Keep a reference to the letter where each term appears. That lets the returned missionary check the meaning in context instead of trying to remember an isolated word.
Avoid turning the glossary into a directory of private people. A description of a recurring role may be enough; a person's address or contact information is not needed to understand the story.
Use a small working template
For each entry, record the term, a plain explanation, and whether the writer has checked it. Keep unresolved questions in your working notes until they are answered.
Here is a fictional example of the format:
The blue notebook: The small notebook the writer used for new vocabulary. This phrase appears in several letters about language practice.
The explanation describes one writer's usage. It does not claim that everyone serving in the same place used the phrase that way.
Ask the writer to check definitions
An abbreviation may have more than one meaning. A local term may be affectionate, informal, or hard to translate. Ask for the intended meaning rather than choosing the first definition you find online.
If no one remembers, you can leave the term unexplained or add a clearly labeled note about the uncertainty. Do not make a confident definition out of a guess.
Decide where explanations belong
A one-time term may need only a short editorial note near the passage. A recurring term is a better candidate for the glossary. Keep additions visibly separate from the original letters.
Prepare the glossary in a separate document first. Place it in the book only through options your book tool supports; do not assume automatic footnotes, an index, or a dedicated glossary page. Check where the content appears in the actual proof.
For dates and the order of events, use a timeline rather than stretching a glossary into a chronology. Our returned missionary reflection questions can also help identify background worth explaining.
Read the email-to-book guide to plan the collection. A glossary should help a reader return to the letters with fewer interruptions, while leaving the writer's own language intact.