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We present the first tentative detection of spinning dust emission fromspecific astronomical sources. All other detections in the current literatureare statistical. The Green Bank 140 foot telescope was used to observe 10 dustclouds at 5, 8, and 10 GHz. In some cases, the observed emission was consistentwith the negative spectral slope expected for free-free emission (thermalbremsstrahlung), but in two cases it was not. One HII region yields a risingspectrum, inconsistent with free-free or synchrotron emission at the 10 sigmalevel. One dark cloud (L 1622) has a similar spectrum with lower significance.Both spectra are consistent with electric dipole emission from rapidly rotatingdust grains ("spinning dust"), as predicted by Draine & Lazarian.Comment: 18 pages, 5 figures, accepted by Ap

Tentative Detection of Electric Dipole Emission from Rapidly Rotating Dust Grains