These are mid-1960s full-size Mercury’s, parked (and partially overgrown) in a yard.

The dark car in the foreground
This is a Mercury Marauder.
You can clearly see the “Marauder” script on the rear quarter panel and the “Mercury” badge on the trunk lid.

Key visual clues:
- Distinctive triple round taillights on each side set into a full-width chrome rear panel
- Chrome bumper with the typical mid-60s Mercury styling
- Formal roofline (hardtop or sedan style)
- Overall long, full-size body
The Marauder name was used by Mercury in the early-to-mid 1960s as a performance-oriented version of their full-size cars (essentially a sportier Monterey/Montclair). The 1963–1965 models are the most commonly remembered, and the taillight design in your photo strongly points to a 1964 or 1965 example.
The rusty red car in the background
This appears to be another full-size Mercury from roughly the same era (likely a Monterey, Montclair, or possibly another Marauder). It shares the same general proportions and rear styling cues, though the heavy rust and vegetation make exact identification harder. It looks like it’s been sitting outdoors for a long time.

Quick context
In the mid-1960s Mercury was Ford’s mid-level brand, sitting between Ford and Lincoln. The full-size cars (Monterey, Montclair, Park Lane, and the Marauder) were big, comfortable, and available with a range of V8 engines, including some strong performance options. Convertibles, hardtops, and sedans were all offered. Many of these cars have now become project cars or parts sources, which is exactly the condition these two appear to be in.