Hi Lawrence,
I'm assuming you got this from the SEDS page at
http://spider.seds.org/spider/Misc/qso.html
If you go to RA=07h 38m 07.4s, dec +17 42' 21"... well, you'll
still not see a quasar there.
> 0735+178 OI 158 07:38:07.4 +17:42:21 Gem 14.85v 0.424 BL
However, the "BL" at the end of the line means it's actually
a BL Lac object. Going back into Extras... Toggle User-Added
Datasets, and turning BL Lac objects On, causes the BL Lac
object PKS 0735+17 to appear.
-- Bill