SIMBAD references

The positions of the IRAS counterparts to the 420 OH/IR stars in the Arecibo sky (0°<δ<+38°) are usually accurate to better than 10". But every star has recently been observed by the Two Micron All Sky Survey (2MASS), which provides ∼0".2 quality positions, while those with |b|≤4°.5 have also been observed by the Midcourse Space Experiment (MSX), which provides ∼2" quality positions. We use the MSX and/or IRAS coordinates to guide us to 2MASS counterparts for the 134 Arecibo OH/IR stars with images in the second release of the 2MASS Point Source Catalog. An unexpected by-product of having the J-H versus H-K_s plot generated from the 2MASS fluxes is the realization that most (∼85%) of the redder OH/IR stars have detached circumstellar shells. We identify five objects that probably, by contrast, have ``normal'' shells, and we confirm the status of AU Vul as a protoplanetary nebula.