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What is a plat book?
A plat book shows land ownership and acreage information for rural parcels of land by township. Additional base map features also include roadways, waterways, section lines, municipal boundaries, subdivisions, recreational boundaries and an index to owners. Price and availability may vary depending on the age of the data.

What is a township?
Theoretically a congressional township is a square tract of land with political boundaries of six miles each and containing 36 sections of land. Actually this is not the case. Years ago, when the original survey was made by the government engineers, they knew that it was impossible to keep a true north and south direction of township lines, and still keep getting township squares of 36 miles. As they surveyed toward the North Pole, they were constantly running out of land, because the township lines were converging toward the North Pole. Provision was made for running intermediate correction lines to allow for the natural curvature of the earth.

How do we gather information?
Because plat books are published as a guide to the community, all ownership data are gathered from the Official Public Record at the County Courthouse by our researchers. Though continual sales and transfers of property make it impossible to guarantee 100% accuracy, direct access to tax records, land descriptions and the insight of county officials help our researchers gather the ownership and acreage information necessary to produce a new plat book.

What is a land description?
A land description is a description of a tract of land in legally acceptable terms; so as to show exactly where it is located and how many acres it contains.

What is RMP's coverage area?
We now have a map library of over 600 counties throughout 18 states, with primary coverage in the Midwest. We have conveniently listed counties in alphabetical order by state on our Shop Online section. Once on our Shop Online section, select your state, and then just click on your county to find details on format and edition availability.

When do plat books get updated?
Updating a county depends on various factors. If certain criteria are not met, a county may not be selected for updating. Some of these factors include but are not limited to the rate of land sales and transfers, local interest (advertising, distribution and sales potential), and the overall condition of the local economy.

How can I be notified of upcoming releases and new releases?
We have a quarterly newsletter that tells you all about what is new at RMP. Just fill in your e-mail address on the right of any page!

Do you only publish plat data as a spiral bound book?
No. In addition to the spiral bound book, we produce County Wall Maps, Township Map Prints and in various digital formats on CD-ROM. Sample Downloads of our CD-ROM formats (County PDF File, County Image Files, RMP SmartImage and County Vector File.) are available for your review.

How can I learn more about Rockford Map Publishers' digital formats?
Fact sheets are available for all our digital formats which include County PDF File, County Image Files, RMP SmartImage and County Vector File.

Do you produce custom maps with land ownership and acreage information?
Yes. We produce custom maps using our plat data in conjunction with other data sets provided by the customer (census, land use, advertising information, school district lines, etc.) within a specified radius or boundary. Limitations due to currency of our plat data and size or scale of the finished map do exist. Please contact our Customer Service Department at rmpsales@rockfordmap.com with your inquiries.

What is a license?
A license is written permission granting the licensee permission to use and reproduce a copyrighted work, such as a plat book, for personal and business applications. A royalty fee is paid to the licensor (author of the copyrighted work) in order to obtain this right.

Why is having a license important?
All copyrighted works are protected by Federal Copyright Law under Title 17 United States Code. This law limits the duplication (physically, electronically or by other means) of works by third parties to ensure recognition of the author as well as the time and expense necessary to create/produce the copyrighted work. By right, the author can pursue violators. The result may include court action and penalty fees.

Are Rockford Map Publishers' plat maps copyrighted?
Yes. Our entire plat library is registered with the Library of Congress and fully protected by Federal Copyright Law.

How can I obtain a license for Rockford Map Publishers' plat data?
If you would like to reproduce our plat information, in whole or in part, for personal or business purposes, please contact our License Manager at 1-800-321-1627 x14 or click on Licensing to learn more about our licensing program.






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