Photoproduction of the cascade resonances has been investigated in the
reactions $\gamma p \to K^+ K^+ (X)$ and $\gamma p \to K^+ K^+ \pi^- (X)$. The
mass split of the $\Xi$ doublet is measured to be $5.4\pm 1.8$ MeV/c$^2$,
consistent with existing measurements. The differential (total) cross sections
for the $\Xi^{-}$ have been determined for photon beam energies from 2.75 to
3.85 (4.75) GeV, and are consistent with a possible production mechanism of
$Y^*\to K^+\Xi^-$ through a $t$-channel process. The reaction $\gamma p \to K^+
K^+ \pi^-[\Xi^0]$ has also been investigated in search of excited cascade
resonances. No significant signal of excited cascade states other than the
$\Xi^-(1530)$ is observed. The cross section results of the $\Xi^-(1530)$ have
also been obtained for photon beam energies from 3.35 to 4.75 GeV.
