Is it ever appropriate to use a space before and after an ampersand?
A colleague and I have a difference of opinion. I believe our department should be abbreviated as "L&D." She believes it should be "L & D," which just looks silly to me. I never see spaces used before and after an ampersand when the term is an abbreviation (two distinct words, yes, but an abbreviation, no), but I haven't been able to find a rule pertaining to this particular issue. Is there one?