Most of the files contain five or more letters. Some files include letters from more than one member of a family, and the larger correspondences occupy two or more files.
Correspondence - main series
Scope and Content
Administrative / Biographical History
Arrangement: The letters from Browning's sister Mariana were originally listed as 7 separate envelopes numbered OB/1/234-240; the rest of the family (except his mother's letters) were listed in a single group with the reference number OB/1/241-260. These envelopes have been rearranged so that the entire family appears in alphabetical order. As there were more people than reference numbers available, the last 5 envelopes all take the reference number OB/1/260/A with a letter following (e.g. OB/1/260a/A) to avoid extensive renumbering.