^Numbers represent an alphabetical ordering by significant words. Various colorings, defined
here, differentiate
National Historic Landmarks and
historic districts from other NRHP buildings, structures, sites or objects.
^The eight-digit number below each date is the number assigned to each location in the
National Register Information System database, which can be viewed by clicking the number.
^The NRIS lists the Spring Creek site as "address restricted", but various references (H. R. Crane; James B. Griffin (1968),
"UNIVERSITY OF MICHIGAN RADIOCARBON DATES XII", Radiocarbon, 10: 61–114) give the approximate location in Egelston Township. The geo-coordinates are approximate.
^Location derived from
this Clipper-associated website; the NRIS still lists it in its old location of Hammond, Indiana
^Numbers represent an alphabetical ordering by significant words. Various colorings, defined
here, differentiate
National Historic Landmarks and
historic districts from other NRHP buildings, structures, sites or objects.
^The eight-digit number below each date is the number assigned to each location in the
National Register Information System database, which can be viewed by clicking the number.
^The NRIS lists the Spring Creek site as "address restricted", but various references (H. R. Crane; James B. Griffin (1968),
"UNIVERSITY OF MICHIGAN RADIOCARBON DATES XII", Radiocarbon, 10: 61–114) give the approximate location in Egelston Township. The geo-coordinates are approximate.
^Location derived from
this Clipper-associated website; the NRIS still lists it in its old location of Hammond, Indiana