I'm going to assume, that there is no other nationwide frequency in another band allotted.
No, and 47.42 isn't limited to the Red Cross. According to the limitation notes in the Public Safety Pool frequency table It is available to:
(23) Thus frequency is reserved for assignment only to national organizations eligible for disaster relief operations under paragraph (a)(2)(vii) of this section. (Note that somebody couldn't spell "This" and it never got corrected.)
(a) Eligibility. The following are eligible to hold authorizations in the Public Safety Pool.
...
(2)(vii) Organizations established for disaster relief purposes having an emergency radio communications plan for the transmission of communications relating to the safety of life or property, the establishment and maintenance of temporary relief facilities, and the alleviation of the emergency situation during periods of actual or impending emergency, or disaster, and until substantially normal conditions are restored. In addition, the stations may be used for training exercises, incidental to the emergency communications plan, and for operational communications of the disaster relief organization or its chapter affiliates. The initial application from a disaster relief organization shall be accompanied by a copy of the charter or other authority under which the organization was established and a copy of its communications plan. The plan shall fully describe the operation of the radio facilities and describe the method of integration into other communications facilities which normally would be available to assist in the alleviation of the emergency condition.
If you want a list of all the American Red Cross nationwide licenses see:
wiki.radioreference.com
Note that most of those frequencies are the same as:
wiki.radioreference.com
Which have thousands of licensess (and unlicensed users) across the country.
The Red Cross has a lot more licenses that cover local areas or states.
