Finding galaxy spectra in SDSS Catalog by object name
One thing you might try doing is to use the SkyServer Navigate interface to see if the object was imaged by SDSS. Enter the name in the &quot;name&quot; box in the upper left and then click on the &quot;Resolve&quot; button. If an image with the galaxy shows up, click on the &quot;Object with spectra&quot; checkbox in the &quot;Drawing options&quot; panel on the left, and red squares will appear for objects with spectra. If there's a red square associated with the center of your galaxy, then there's a spectrum. (You can click on the links on the right-hand side to find out more; there may even be a little graphic of the spectrum you can click on.)
Here's an example for the elliptical galaxy NGC 6066, which does have an SDSS spectrum (as indicated by the spectrum-plot graphic to the lower right):

Something you should be aware of: in many cases, very nearby and luminous galaxies like your three examples simply don't have SDSS spectra. (This is true for your three galaxies, in fact.) Since such galaxies were known to already have plenty of spectra (including redshift measurements), there was little need to get SDSS spectra of them, so they were ignored. So you may end up needing to focus on more distant elliptical galaxies (NGC 6066 has a redshift of 0.034, while your example galaxies all have redshifts $&lt; 0.005$.)