How do I add multiple DXF files into a single drawing and line them up?

[ewrankend66]

AutoCAD newbie here trying to do some GIS work for somebody building a house.

I took a DEM of the area and created 2ft and 100 ft contour lines of the area. I then converted those contour files into 2 DXF files. They both load into AutoCAD fine (I can see them once I zoom to their extents) but I can't figure out how to get them into the same drawing and "lined up" - they're for the same square area. I'd like each DXF file/model to be in it's own Layer so I can toggle them on and off https://vlc.onl/  .

@ewrankend66 - This post has been edited due to Community Rules & Etiquette violation.

[Pointdump]

Hi @ewrankend66,
Let's see what you've got. Please zip together and post DEM's and DXF's. If that exceeds the 71MB limit of the forum, then a link to WeTransfer, DropBox, etc...
Dave

[paullimapa]

What happens when you use the xref command and attach one into the other?

Do they line up?