Ge
The 42 ID and the 1/258 do not have a really good site as far as showing historical information. The 1/258 FA was the General Support Battalion to the 42 ID. Their MTOE called for M110 SP Howitzer, but through the late 70s into the 80s they had two batteries of M110 and one battery of the M115 towed. With the Regan buildup they eventually recieved the rest of the M110. Prior to that (1960s and early 70s) they were all M115 towed. During WWII they were equiped with M12 155mm gun. Not sure when they made the transition to M115 towed....sometime in the 1950s
Nonetheless, there is very little in the way of photos and "offical" information. I will look through the US Army Field Artillery Assn archives.
Rounds Complete!!