Measurement of Upper Limits for $\Upsilon\to \gamma + {\cal R}$ Decays

Using data collected from the CLEO III detector at the Cornell Electron Storage Ring, we report on a new study of exclusive radiative decays of the $\Upsilon$ resonances into two-body final states ${\cal R}\gamma$, with ${\cal R}$ some resonant hadronic state. We present preliminary upper limits for these $\Upsilon({\rm 1S})$, $\Upsilon({\rm 2S})$, and $\Upsilon({\rm 3S})$ two-body decays as a function of $\gamma$ energy. Additionally, we place upper limits on two-body final states of continuum $q{\overline q}$ decays for center-of-mass energies just below the $\Upsilon({\rm 1S})$, $\Upsilon({\rm 2S})$, and $\Upsilon({\rm 3S})$ energies.