Math Error in old paper ?

I'm trying to do an example in the document,
On the Design of Matched Equalizers of Prescribed Gain versus Frequency Profiles
by Douglas J. Mellor of HP, 1977.

Can someone check my math?
For their first example, I get tau=1.92e-11, k=10, A=C=-15 and B=-66.
R2 =-4.16, -0.24. The paper says R2=0.473, 2.11.

"I think" this came from IEEE so can not post. Is it permissible to share?

tnx,
GE