After typing the above I decided in true internet fashion to look up the details later. Ahemm, anyhow I see that OR was an Argus title and Argus was gobbled up by some corporate raider dipshits.
I cannot recall what hapened to PV4 but likely have the last issue somewhere. Maybe died around 1984.
When you say PV4 I assume that’s Pick-up, Van and 4WD, correct?
I think Peterson actually had Off-Road for a while. Maybe Im thinking one of the others. It’s been 15 years since I really paid attention so who knows. There was a lot of scrambling and warfare when they started losing marketshare to ORC, Pirate 4x4 and a couple of the other bigger sites.