Miss Bianca is irresistible, as always. Just an echo of "The Lost World", in the presence of the crotchety professors. ( )

One of a series of which I liked the early volumes, beginning with The Rescuers --the elegant mouse Miss Bianca and her adoring companion Bernard of the Prisoner's Aid Society once more set out to succor a prisoner, in this case a young boy imprisoned in the salt mines in a nation like 19th century Russia. ( )

When a desperate note is found in Miss Bianca's salt cellar, she, with the faithful Bernard and two elderly professors, sets off for the salt mines to rescue an 8-year old boy. Charming story with well-realized personalities. ( )