Provided are isolated antibodies, and fragments and derivatives thereof, which bind to tumor antigens. Provided are antibody/nanoparticle conjugates. Also provided are compositions and delivery agents that include the disclosed antibodies, conjugates, fragments and derivatives thereof cells that produce the same methods for producing the same methods of using the same for detecting, targeting, and/or treating tumors and/or metastatic cells derived therefrom and/or tumor stem cells and methods for predicting the recurrence of cancer in a subject.
