Fellows, engine controls are on, or immediately adjacent to, the throttle quadrant.
Top row of levers, L to R (in pairs): 1) propeller pitch, 2) throttle, 3) mixture control. The start switch/push-button is to the immediate left of these levers.
Below the levers are two rotary switches: L - fuel tank switch (L wing, R wing, fuselage, and alternate), and R - magneto switches (L, Both, R).
Below the rotary switches are four levers, L to R: 1) L carb heat, 2) landing gear, 3) wing flaps, and 4) R carb heat.
The gear indicator is on the instrument panel in front of the co-pilot. (and to the right of the gear indicator is the all-important manufacturer's type/model/series plate - fingers crossed for a well-illuminated, high resolution ROV photo of this in the not-to-distant future. . .

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Hope this helps, John