Strongest artificial emission lines in the night sky (red are the most intense)
Line Sources
Hg I  3650 Hg lighting
Hg i  3663 Hg lighting
Hg I  4047 Hg lighting
Hg I  4078 Hg lighting
Hg I  4358 Hg lighting
Na I   4665, 4669 High pressure sodium
Na I   4748, 4752 High pressure sodium
Na I   4978, 4983 High pressure sodium
Na I   5149, 5153 High pressure sodium
Hg I   5461 Hg lighting
Na I   5683, 5688 High/low pressure sodium
Hg I  5770 Hg lighting
Hg I  5791 Hg lighting
Na I   5890, 5896 High/low pressure sodium, airglow
Na I   5700 - 6100 (wings) High pressure sodium
Na I   6154, 6161 High/low pressure sodium
K I   7665 High/low pressure sodium
K I   7699 High/low pressure sodium
Na I   8183 High/low pressure sodium
Na I   8195 High/low pressure sodium

There are several good references to the night sky airglow lines:

Osterbrock et al 1976, PASP
Osterbrock & Martel 1992, PASP
Massey et al 1990, PASP
Broadfoot & Kendall 1968, JGR
Turnrose 1974, PASP
Louistisserand et al 1987, A&A Suppl.
As a more general reference, see Leinert et al 1998, A & A Suppl.