COM microfiche conversion planned for report retrieval

Start with the report-retrieval question

COM is computer-generated output recorded as microform. For a report or statement collection, the useful first question is how someone must find a known result later: by report title, run date, reporting period, account or policy reference, printed page, or another field the collection owner approves. That question turns conversion from a sheet-count exercise into a retrieval plan.

A representative inventory can record visible headers, fiche sequence, apparent report groups, existing lists, mixed layouts, and condition observations. Existing order and related drawer or box labels may provide the context needed to interpret a fiche. Unknown values should remain unknown until collection documentation or an approved review establishes them.

Technical references:[1]

Keep report headers and source positions together

A microfiche is a transparent sheet with a readable identifying heading and a two-dimensional grid of microimages. The Library of Congress describes one common COM pattern as a 105 × 148 mm sheet at an effective 48:1 reduction with 15 rows, 18 columns, and 270 microimages. That is a useful recognition clue, not a requirement for every COM report collection.

Where a heading, fiche number, row and column, or printed page is visible or supplied in an approved index, it can preserve a route from a digital record back to its source. NIST's historical FIPS guide documents heading areas, grid layouts, and optional row-and-column identifiers; the project should retain only the references that fit the actual collection and approved mapping.

Technical references:[1][3]

Use representative pages to define OCR scope

Dense report columns, small type, faded areas, and changes in film quality can affect whether visible text is useful for recognition. A representative sample can examine report headers, body pages, tables, control totals, and atypical or damaged frames before the requested OCR role is defined. It can also identify whether a readable image and structured fields are more important than text extraction for a particular retrieval task.

OCR may support search of machine-printed characters from the delivered image, but it does not replace a required report field or establish that every page will be searchable. Fielded indexing gives an agreed route to a known record; OCR is a separate, sample-informed access feature with its own exceptions and limits.

Technical references:[2]

Agree retrieval fields before production

The field map should name the source for each value: a fiche heading, a visible report page, an existing report list, or another collection-controlled reference. A field is not inferred simply because it may be useful. For example, an account, policy, or case identifier belongs in the map only when it is visibly present or supplied through an approved collection index.

The examples below are a starting point for report-style COM fiche. The final selection, format rules, and any controlled values are conditional on the collection and its approved mapping.

Technical references:[3]

Map delivery to the approved destination

Images, OCR output when requested, and metadata can be related with a stable record identifier and an agreed manifest or sidecar. Before a broader release, a representative batch can check file-to-metadata relationships, report grouping, required fields, source references, and the documented handling of exceptions. That review helps make the handoff understandable without assuming a fixed repository schema.

Repository rules, configured fields, accepted file types, access arrangements, and import methods belong to the destination owner's workflow. National Microfilm can plan a customer-approved delivery package and field map; a platform name alone does not establish a native integration or automatic load.

Plan conversion for an authorized collection

This service is for organizations planning conversion of COM reports or statements they control or are authorized to provide for the project. If a collection belongs to a government body, library, or other institution, the organization retains decisions about rights, access, release, and the destination workflow.

National Microfilm does not provide citizen record lookup, public-record fulfillment, or a public portal for government or library holdings. Bring representative fiche, available report lists, and the retrieval question so the project can define capture, indexing, OCR scope, and delivery around the authorized collection.

Common questions