Here are some I have from either CSR's or from letters. I will add what unit I have tied to it to assist with further identification. IN no particular order, some in Ark or other states where Ark troops camped

Camp Joe Johnston 3 miles from Tupelo, MS 1862
Camp McIntosh, near Corinth (1AR MR)1862
Camp WElls, MO Cherokee Nation 12 miles from Camp Walker ( 1 AR MR) 1861
Camp Lee MO 1861 (1 AR MR)
Camp Pickens Mo 1861 (1 AR MR)
Camp Price, MS Itawamba Co MS 1862 20th Ark INf
Camp Rogers, MS 20th Ark after Corinth Oct 1862 named in honor of COL Rogers of TX dsmntd Cav killed there
Camp Pritchard, MS near Vicksburg?1863 20th Ark IN
Camp Horsehead, AR Dec 62..Monroe's Cav
Camp Cherokee, NE Ark 2nd Ark Inf 1861
Camp Hardeee, NE Ark 2nd ARk INf 1861
Camp Kirby Smith Jan 1864 Monroe's Ark Cav
Camp Vandiver (US) outside Helena 1863
Camp Crystal Hill (Crystal Hill NLR)

I am sure I have others but these are just a few I ran across quickly.

Also, I thought Camp Sumter or Sumpter was south of present day Hope near present day Spring Hill Arkansas. Or were there 2 different ones?