Undergroung H - Altona? and #7 - Karosserie-Fabrik Bernhard Klein.
Underground I - Parc Départemental de Parilly Train Station and #3 - Berliet? by Achard, Fontanel & Cie - Lyon.
Underground J ( I presume it's a French location - Courbevoie?) and #9 - Carrosserie Alin, Liautard & Cie.
I'm quite impressed!
#7 is the Karosserie-Fabrik Bernhard Klein, which was in the city of Altona at that time. In 1937, Altona became a part of Hamburg, and H is the underground station
Christuskirche which is the closest one to Klein's factory.
#3 is by Achard, Fontanel et Cie from Lyon, and you have identified I correctly.
#9 is from an Alin, Liautard et Cie ad. Since there is no Courbevoie metro station, I took the closest Parisian one, Pont de Levallois-Becon, which you correctly found as Underground J.