It is interesting to note that during this era the LF and VLF signals from Fort Collins, phased locked to Boulder, were received in Hawaii and Maryland (then the home of WWV) and used to control the frequency of the shortwave stations WWVH and WWV .
Of course, WWVB, as well as its sister stations WWV, WWVH, and WWVL, were not transferred to ITSA.
Okayama, NIST Time and Frequency Radio Stations: WWV, WWVH, and WWVB, Nat.
 Standard Frequencies and Time Signals, WWV and WWVH, Nat.
Morgan, Control of WWV and WWVH Standard Frequency Broadcasts by VLF and LF Signals, Nat.
 NBS, Standard Frequency and Time Services of the National Bureau of Standards: Provided by Radio Stations WWV, WWVH, WWVB, & WWVL, Nat.
It brought in both WWV and WWVH broadcasts that evening (WWVH ends its half-hourly identification message with "Aloha" - a nice touch).
For detailed information on WWV and WWVH signals and geophysical alerts, write to U.S.