Was that
using the NED? It's been on my list to tidy up an image of NGC1365 that has about a dozen quasars in the background. I located them a bit laboriously with NED and Sky-Map, but it was still pretty exciting to image a tiny speck of light that has a redshift of 3.17, from only 2 billion years after the Big Bang, and a co-moving distance of 21 billion light-years away, all from the backyard! NED is great because you can confirm you've identified the right speck, then get cosmological data if you want.
NED seems patchy on quasar distribution (??), or at least my selective searches around the few galaxies I've imaged, like M83, produced far fewer hits than NGC1365 - and I'd presume that the quasar distribution isn't that anisotropic!