This new raspberyy will be available through Iowa nurserymen this coming spring. This article tells the story of what it's like, what it is and its record, and offers some planting suggestions.
Lantz, H. L. and Denisen, E. L.
"Black Hawk- A New Raspberry for the Midwest,"
Iowa Farm Science: Vol. 9
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol9/iss6/2