Oak Forest Site
The Oak Forest Site (11Ck-53) is located in Oak Forest, Cook County, Illinois, near the city of Chicago. It is classified as a late Prehistoric to Protohistoric/Early Historic site with Upper Mississippian Huber affiliation. History of Archaeological Investigations. In 1958 archaeological remains were noted during construction of a new road by the Oak Forest Hospital. Excavations were carried out in 1958 as a salvage project under the auspices of the Illinois Archaeological Survey. In 1978, during construction of two new buildings by the Illinois Department of Transportation more archaeological material was noted. A team from Northwestern  University conducted a salvage excavation in 1979. Results of Data Analysis. Excavations at the site yielded Prehistoric to Protohistoric and early Historic artifacts, house structures, pit features, plant remains (1979 excavations only) and animal bone. Features. A total of 8 house structures and 17 features were identified during the 1958 excavations. The house structures ranged from 25 to 47.5 feet long and 12–15 feet wide. Some of the houses had pit features as well (fire pits and refuse pits). Most of the features had ash and carbonized material within their fill, and are classified as fire pits. Feature 15 was  a bell-shaped storage pit that contained a fragment of iron interpreted by the excavators to be early European in origin. An additional 55 features were identified in the 1979 excavations. They noted little variation in most of the pits and they may be interpreted as fire, storage or refuse pits. Feature 125 in particular was noted to be a roasting pit similar to those found at other Upper Mississippian-affiliated sites of Zimmerman, Rader, Knoll Spring, Schwerdt, Elam, Griesmer and Moccasin Bluff. At Griesmer the carbonized remains of white water lily (Nymphaea odorata) tubers were recovered and at Schwerdt  and Elam, the carbonized remains of American Lotus (Nelumbo lutea)tubers were recovered from this type of roasting pit. Plant Remains. No plant remains were reported from the 1958 excavations. This is because flotation data recovery techniques were not in wide use among archaeologists of that era. The 1979 excavations took 42 samples for flotation analysis (24 from features and 18 from midden contexts) and as a result a wide variety of plant remains (wood charcoal, nutshell, maize, seeds and bulbs) were found which contribute immensely to our knowledge of Upper Mississippian subsistence. Plant analysis of flotation data is based primarily  on carbonized remains; on plant material that was burned in a fire pit or hearth but not completely consumed. The carbonized materials are rendered much more resistant to decay and thus are often available for the archaeologist to examine. Not all of the carbonized plant remains are from food items; some of the small seeds recovered may have been intrusive due to the normal seed dispersal process (i.e. the wind just blew them into the fire). Plant material that was not carbonized was of course subject to the normal process of decay and would not be available to the archaeologist  except under extraordinary conditions. Summary of Findings: Animal Remains. Remains from several species were recovered from the site. The main species present were deer and fish; also present were turtle, dog, bald eagle, sandhill crane, otter and others. These remains were not modified into tools like the bone tools described in the Artifacts section below, and may be considered food remains or, in the case of the dog, the remains of ceremonial activities. Dog sacrifice and dog meat consumption was observed to have ceremonial and religious implications in early Native American tribes. In addition, bald eagles, sandhill cranes and otters  were known to have spiritual significance in historic Native American religious groups/ceremonies such as the Midewiwin. Artifacts. Artifacts recovered from the site included: The non-pottery artifacts found at an archaeological site can provide useful cultural context as well as a glimpse into the domestic tasks performed at a site; ceremonial or religious activities; recreational activities; and clothing or personal adornment. Some of the most prominent and diagnostic non-pottery artifacts are presented here in more detail: Upper Mississippian Huber Pottery. Archaeologists often find pottery to be a very useful tool in analyzing a prehistoric culture. It is usually  very plentiful at a site and the details of manufacture and decoration are very sensitive indicators of time, space and culture. Although the Huber tradition was well-known by archaeologists for decades following the original excavations at the Huber site in 1929, a formalized typology was not developed until Charles Faulkner devised one in his 1972 report on the Griesmer site in northwestern Indiana, just to the east of Chicago. Huber pottery is characterized by shell-tempered, plain surface pottery with globular vessel shape and restricted orifices with everted rims. Some vessels also have strap handles. Decoration (when present) usually  consists of vertical or obliquely applied incised lines generally running from the lip to the shoulder. Rarely, surfaces are cordmarked or smoothed over cordmarked. The top of the lip is either plain or decorated with fine to wide notching. A minority also have punctate decoration, mostly in combination with the trailed lines. The 1958 excavations recovered 1,270 sherds, almost all of it Huber ware. Surface was plain on 98% of sherds and cordmarked on 2%. Half of the lips were unnotched. The most common rim profile reported was everted with flat lip and either wide-notched or unnotched lip. Rarely , sherds were red-slipped on the exterior and/or interior. An additional 3,347 sherds were recovered in the 1979 excavations, of very similar attributes. None of these sherds were reported to be cordmarked except for 3 sherds that were classified as Danner series. 45% of the rims were unnotched and of the decorated sherds, 93% were incised with fine lines. Following Faulkner’s typology, this is the proportion of the pottery types at the site: Chronology of Oak Forest pottery within the Huber sequence. The trends in certain pottery traits are very time-sensitive and can be used as indicators of  relative age. Based on information on other Huber sites in the area, archaeologists have determined early Huber pottery is more likely to have cordmarked surface finish; wide-trailed decoration; and notched lips. Early Huber sites have also been observed to have significant amounts of Fisher Ware as well. Late Huber pottery has predominately plain surface finish; fine-line incised decoration; and unnotched lips. A minority also have punctate decoration, mostly in combination with the trailed lines. In the Oak Forest site assemblage, only 2.5% of sherds are cordmarked, Wide-line decoration is reported to be rare. Also, about half of  the lips are unnotched. There is also no Fisher Ware at all in the Oak Forest assemblage; but Danner Ware is present, which has been found in early Historic contexts at the Zimmerman site in northwestern Illinois. This combination of traits indicates a relatively later time placement for Oak Forest within the Huber sequence. This is supported by 6 radiocarbon dates which indicate the occupation of Oak Forest took place between a range of A.D. 1425-1625. Huber within the Upper Mississippian Culture. Huber ware (and Huber culture) are often mentioned together with Fisher. Both Fisher and Huber are Upper  Mississippian cultures which existed in the southern Lake Michigan region in the states of northern Illinois and Indiana and southwest Michigan. Both have shell-tempered pottery but Huber is predominantly plain surface with fine-line decoration and Fisher is predominantly cordmarked surface with wide-line decoration. The relationship of Huber and Fisher both with each other and with other Upper Mississippian cultures in the area has long been a matter of debate and speculation among archaeologists. James Griffin, upon examining the artifacts from the original 1929 excavations, felt that Huber was a Component of the Oneota Aspect based on the  form and design of the pottery, close to the Orr and Lake Winnebago foci, and that Fisher was part of a separate Focus. Since that date, we’ve obtained a great deal more information and now we know that Fisher is the older of the two and Huber is the one that survived to the Historic period. Nevertheless, both Fisher and Huber coexist at the same sites seemingly at the same time. Hoxie Farm, Griesmer and Moccasin Bluff are examples of this. Most archaeologists now believe that both Fisher and Huber are taxonomically-related phases within the Oneota tradition. The  relationship between the two is time-related in that Huber is derived from Fisher; but there are also late Fisher sites like Fifield, where Fisher pottery is associated with late Prehistoric artifacts, so it is possible that Fisher also survived until the Protohistoric or early Historic period. Significance. There is direct evidence of cultivated plants at Oak Forest. The remains of maize were found along with squash and the common bean. Sunflower and wild rice were also recovered. Also, the recovery of knotweed, little barley and goosefoot indicates the Huber culture participated in the Eastern Agricultural Complex. Deer bone was  also present in abundance, along with arrowheads for bows-and-arrows, indicating the site residents still relied on hunting; and fish and turtle were also present in the animal bone remains, so they were also exploiting food resources of the nearby marshes and creeks. With regards to seasonality of occupation, based on the presence of several house structures, and supported by an analysis of the animal bone and plant remains, the researchers determined the site functioned as a permanent to semi-permanent agricultural village. Along with the Palos site, Oak Forest had some European-made trade articles included in the  assemblage. This indicates the Huber culture lasted until European contact and therefore was one of the Historic Native American tribes encountered by the early explorers and fur traders. It has not been conclusively demonstrated which tribe exactly made the Huber pottery. However, the Potawatomi, Illinois and Miami have been recorded as present in the lower shores of Lake Michigan in the early historic period, and all have been suggested as the tribe corresponding to the Huber culture.