SRS products are available for subscribers to the US Martial Arms Collector magazine only.
Letters for known serial numbers are available from over 100,000 serial numbers.
It is located near Shelbyville, Capital City, Ogdenville, and North Haverbrook.
For many years, the evidence was sufficiently contradictory that it could not be identified with a specific state; however, Matt Groening has come forward and admitted that it was based on Springfield, Oregon.
Much of what now forms the housing estates of the Springfield Road was formerly rural land near the base of the mountains.
The area around what became New Barnsley was known as Brown's Fields and was formerly used for grazing cattle.
It became a leading employer and produced large quantities of munitions during the Second World War.
Authorities say the quick-thinking bus driver narrowly avoided hitting the woman, who suffered minor injuries.
Springfield is the fictional town / city in Springfield County, Springfield's State, United States, in which the Simpson family lives.
Springfield Research Service was founded by Franklin Mallory, an ardent research specialist and author.
Areas of interest to collectors are: The US MARTIAL ARMS COLLECTOR MAGAZINE & Springfield Research Newsletter; serial number letters for US Military weapons based on government documents.