The train in the opening credits and closing scene is Colorado's Durango & Silverton Narrow Gauge Railroad, which was then the Denver and Rio Grande Western. In 1971 the DRGW was still owner and operator of the line, and this track was still part of a class 1 railroad and not a tourist / heritage railroad. Even though DRGW was looking at the time for a buyer or just the permission to the interstate transportation board for abandonment of the rail grade. They would find neither until the mid 1980s. The scene was reused a year later in the italian western comedy Verflucht, verdammt und Halleluja (1972).
James Garner, Jack Elam, Harry Morgan, Henry Jones, Walter Burke, Willis Bouchey, Gene Evans and Kathleen Freeman all appeared together previously in Auch ein Sheriff braucht mal Hilfe (1969). Though this film is not a sequel to that one --all the above actors play entirely different characters in a different town--they all played similar characters to those they play here.
As this was a Cherokee Production, which was James Garner's own production company, there are many familiar faces, cast members who worked with Garner on his series, including Detektiv Rockford - Anruf genügt (1974).
Miss Hunter's College on the Hudson for Young Ladies of Good Families, which Patience wanted to attend, is now Hunter College on 68th Street and Lexington Avenue in New York City, part of the City University of New York.
James Garner and Suzanne Pleshette would later guest star together on Meine wilden Töchter (2002) after John Ritter's death in 2003, as a result, Garner became a regular cast member on the show until the series finale in 2005.