Understanding Registers and Their Limitations
Launch library · evergreen read

A register is simply a systematic list, kept by an institution to record a defined category of information such as births, memberships or admissions, following a consistent format that makes entries comparable across a long stretch of time and many different record keepers, some of whom never met and worked decades apart from one another under entirely different administrations.
That consistency is the register's great strength, but it is also its limitation, since a register only records what its designers decided mattered at the time it was created, and anything outside that narrow, predetermined scope simply never made it onto the page at all.
Reading a register well means understanding its original purpose before drawing conclusions from what it does or does not contain, since an absence in a register often reflects the boundaries of the form itself rather than the underlying reality it was meant to capture in the first place.