maps of county boundaries over time for US states.

this is wicked cool
http://publications.newberry.org/ahcbp/project.html

What records I can get at what county.

Logan county: $5 for genealogical records

Birth records begin in our office at the year 1878. Genealogical birth records may be obtained if the record is more than 75 years old.

Death Certificates begin in our office at the year 1878. Death Certificates may be obtained by any party with a legitimate interest. Genealogical death records must be on file at least 20 years before release.

Marriage records date back to 1857. A certified copy may be obtained by either the bride or the groom. Genealogical copies may be given if the marriage record has been on file for longer than 50 years.

gasaway/huston marriages

GASAWAY, JAMES D HUSTON, LAVINA A 1890-05-08 002/0000 00007978 LOGAN
GASAWAY, JOHN D HUSTON, ELIZABETH 1861-10-10 001/0314 00000625 LOGAN
GASAWAY, THOMAS HUSTON, EMILY 1858-12-21 001/0108 00000215 LOGAN
GASAWAY, THOMAS P HUSTON, NANCY 1886-04-05 001/0079 LOGAN
GASAWAY, WILLIAM A HUSTON, JANE 1884-12-29 001/0078 LOGAN

THis is from the Illinois Statewide Marriage Index, 1763–1900.
http://www.ilsos.gov/GenealogyMWeb/marrsrch.html

brother of Bang, uncle of bang