The document is a form from the New Hampshire Department of Revenue Administration for private railcar property tax. It requests information to update the department's records, including ownership details, contact information, and statistics on the number of railcars owned or leased by the company, miles traveled, and the original and net book value of the railcars. The form must be signed and submitted by July 1 with an assessment date of April 1 in order to file the private railcar property tax return.