Archive Of Our Own (AO3)
            LitGal - Dark, Still Water 8/16
                           (Sentinel x-over) SG-1 encounter Jim & Blair in Cascade during 'Murder 101' & SG1 S3, Teal'c's PoV

Fanfiction.net
            90507 BK the Irregular - The Scarab 4/03
                           (Buffy x-over) a Goa'uld in Sunnydale
            479439 Marbleglove - A Square Peg in a Round Hole 8/16 (AO3)
                           (Hlr x-over) Methos encounters clone-Jack, ends up at the SGC.

Seventh Dimension Highlander Archive
            Tasha Duncan-Drake - Cat's Eyes (Hlr x-over) 4/03 (AO3)
                           Methos & Richie visit the SGC
            Ecolea - Changing of the Guard: 1-5 (Hlr x-over) 2/04
                           Adam Pierson is recruited by the SGC

Sheila Paulson
             1. Sentinels 8/16
                        - Blair recruited to help SG-1 on a mission with an Incan Sentinel (Sentinel x-over)
             2. The Limits of Trust 8/16
                        - post TSbyBS, Blair goes to work at the SGC (Sentinel x-over)
             3. Nor Iron Bars a Cage 8/16
                        - a Goa'uld infiltrates the SGC (Sentinel x-over)

Suzie Bagley
             1. Paradox (X-F/Hlr/SeaQuest x-over) 2/04
                        - Immortal Scully is dying, can SG1 help?
             2. Parallel (X-F/Hlr/SeaQuest x-over) 12/10
                        - an alternate reality device causes big problems