Outline is Representative of Size and Shape:
Name Details:
Identified By:  B. Robert Butler
Named For:  
Date Identified:  1961
Type Site: 
Point Validity: Valid type

Butler is a distinguished anthropologist and a professor at the Idaho State University.  Butler conducted many excavations in Idaho and is an expert on point typology.  This type was named in a professional publication and has many professional references.  This is considered a valid type.
Cascade Bi-Point
Cascade Type A
AKA: Kennewick
Cluster:
Description of Physical Characteristics and Flaking Pattern:
This is a narrow medium to large ovoid point with an elliptical cross section, but may have a median ride on thick examples.   The blade is excurvate, curving in at the tip and curving back in at the base giving the point a contracting hafting region.  The blade is often serrated.  Grinding of the hafting region is generally absent.  The base is pointed.  The flaking pattern may vary from parallel oblique, collateral, or random.     
Size Measurements:

Total Length - 25 to 135 mm (average 45 to 60 mm),  Blade Width - 11 to 30 mm (average 11 to 18 mm),  Thickness - 3 to 9 mm.
Commonly Utilized Material:
The most commonly used material is obsidian and basalt followed by locally available materials.  Heat treatment is not used for this type. 
Additional Comments:

This is the point was discovered in the pelvis of the Kennewick Man (Sally M. Walker and Douglas W. Owsley, 2012) which has resulted in many referring to this as the Kennewick point.
Distribution:
Distribution Comments:

This point is primarily found in Columbia Plateau of Washington and Oregon and into northern Idaho and western Montana.  This point is found through the Cascade Range and into the northern Sierra Nevada range of California and Nevada.  This point may be found into the  Okanagan Range of British Columbia and extends to the coastal regions.
Age / Periods:

Date: 8,000 - 5,000 B.P.
Cultural Period: Early to Middle Archaic
Glacial Period: Middle Holocene
Culture: Old Cordilleran Culture
Age Details:
This point is part of the Cascade Phase.
Similar Points:
Agate Basin, Early Leaf, Excelsior, Haskett, Mahkin, Need, Owl Cave, Parman, Spedis, Steamboat, Wildcat Canyon, Windust, Yukon Bi-Point
Other points in this cluster / Related / Associated Points:
Cascade, Cascade Knife, Cascade Shouldered
Pictures: 


Pictures Provided By:
Lynn Augustine
John Cobbs
Western Artifacts
KirkKirk
Windy City Artifacts
 Cascade Bi-Point Projectile Point, Cascade Bi-Point Arrowhead,
Cascade Type A,
Kennewick Projectile Point, Kennewick Arrowhead
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References: (See Reference Page, Entry Number):

5, 23, 30, 48, 50