What other low channels (below 26.965 MHz) were active other than 26585 AM / 26.585 MHz? 26705 AM / 26.705 MHz (and nearby frequencies 26.685 MHz, 26.695 MHz, 26.715 MHz, etc.) are often busy when 26.585 and others are active. 26.595 MHz is apparently the "secret" channel for Mexican truckers. 26.605 MHz is the alternate.
Since 26.585 is channel 7 "down one band", most export radios jump from 26.585 to 26.605 MHz (channel 8 down one band), the only way to get to 26.595 MHz is to use the +10 kHz switch (to get to channel 7A). I've talked to 11m guys in France and other parts of Europe who have heard Mexican Spanish voices on 26.585 MHz AM and 26.595 MHz AM when propagation to Europe is good...which is pretty crazy when you think about it. 26.565 MHz to 26.955 MHz are authorized CB frequencies in several European countries (in FM mode only, however, as channels 41-80 in straight 10 kHz channel sequence, no skips). I know that's the case in Germany, the Czech Republic and Hungary - and probably other countries.
Channels 1 - 40 are the same as the American CB band plan (CEPT/European standard band plan), then,
26.565 MHz - Channel 41
26.575 MHz - Channel 42
...
26.945 MHz - Channel 79
26.955 MHz - Channel 80
As an aside - I know I go off topic - I use both kHz and MHz notation on the 11m board because most folks searching these frequencies in their favorite search engine are more likely to use MHz notation, but its unofficial HFU policy to use kHz notation.