Here is just one database from The Library of Virginia.
Burned Jurisdiction Database
This database contains a growing collection of records originally recorded in courts or jurisdictions that subsequently suffered record losses. These records are from higher or appeal courts, most of which do not presently exist. Among the jurisdictions included in this database are the General Court, the [Supreme] Court of Appeals, the High Court of Chancery, the various Superior Courts of Chancery, and the various District Courts. These records were found while processing chancery causes and other locality materials. The database contains records from collections housed and processed at the Library of Virginia as well as those processed in localities.
These records were generally used as exhibits in a court case. In most instances, the indexed records compose only a fraction of a case or proceedings. In most cases, the copy may be the only extant copy of the document. The originals remain with the court materials being processed, but photocopies are made and are indexed in this database. The copies are filed together in an artificial collection - the BURNED RECORDS JURISDICTION COLLECTION - and are readily accessed through the Archives Research Room at the Library of Virginia. Please check this database periodically as this is an ongoing project.