They appeared twice, but I could only find a pic of the first appearance (they played opposite the cast of What's Happening!!). The team was James Broderick (Doug Lawrence), Meredith Baxter (then -Birney; Nancy Lawrence Maitland), Gary Frank (Willie Lawrence), Quinn Cummings (Annie Cooper Lawrence), and John Rubenstein (Jeff Maitland).

Not long after, Family went up against Eight is Enough. Meredith, John and Quinn returned, this time joined by Meredith's then-husband, David Birney (who was a guest star on Family the same week the FF ep taped) and Louise Foley (Audrey Pfeiffer). Sadly, I can't find a pic of that lineup.