The August 2014 issue of School Library Journal includes a review of Lost Republic. Here is an excerpt from that review:
work provides vast opportunities to discuss and compare the ethical issues of a
tech-dependent world vs. one dependent on natural resources. Readers will enjoy
this epic time travel adventure."
This title (and all titles in Enslow's Scarlet Voyage imprint,) are available through your preferred vendor, enslow.com, independent bookstores, Amazon, and Barnes and Noble.