Sources on US tank production numbers during WWII, especially LVTs

by SlaugMan

I am doing a paper on the LVT during WWII, and have run into a bit of an issue. I have one source that says that the amount of LVT's produced was less than 10,000, while Wikipedia (I know, not a real source) said that 8,000 of only just the LVT-4s were made. That leads me to really want a second source to collaborate the numbers I am using.

Is there a US database, or records that would state how many of each variation were produced by the end of the war?

the_howling_cow

Slightly varying production numbers exist, although being realistic, only one can be taken to be the actual number built.

The document Official Munitions Production of the United States by Months, July 1, 1940-August 31, 1945 lists a total of 18,620 of all types produced from July 1941 to August 1945.

Month Unarmored, LVT Armored, LVT (A)
July 1941 1
August 1941 6
September 1941 12
October 1941 9
November 1941 23
December 1941 21
January 1942 38
February 1942 25
March 1942 38
April 1942 41
May 1942 48
June 1942 58 2
July 1942 74
August 1942 94
September 1942 105
October 1942 52 1
November 1942 133
December 1942 125
January 1943 103
February 1943 86
March 1943 75
April 1943 35 7
May 1943 61 47
June 1943 117 55
July 1943 174 58
August 1943 219 45
September 1943 236 68
October 1943 243 65
November 1943 259 70
December 1943 246 73
January 1944 341 101
February 1944 397 114
March 1944 604 181
April 1944 680 194
May 1944 762 217
June 1944 696 198
July 1944 615 196
August 1944 583 176
September 1944 510 127
October 1944 696 173
November 1944 652 151
December 1944 599 130
January 1945 683 125
February 1945 727 125
March 1945 817 115
April 1945 790 70
May 1945 792 65
June 1945 785 60
July 1945 589 58
August 1945 406 52
Total 15,501 3,119

Gordon L. Rottman's U.S. Marine Corps Pacific Theater of Operations 1943-1944 lists a total of 18,616, while Steven J. Zaloga's Amtracs: U.S. Amphibious Assault Vehicles, gives 18,621, with a chart by type and year;

LVT Production 1941-45

Type 1941 1942 1943 1944 1945 Totals
LVT-1 72 851 302 1,225
LVT(A)-1 3 288 219 510
LVT-2 1,540 1,422 2,962
LVT(A)-2 200 250 450
LVT-3 1 733 2,230 2,964
LVT-4 11 4,980 3,360 8,351
LVT(A)-4 1,489 401 1,890
LVT(A)-5 269 269
Totals 72 854 2,342 9,093 6,260 18,621

The American Fighting Vehicle Database gives the following;

Type Total
LVT-1 1,225
LVT(A)-1 509
LVT-2 2,963
LVT(A)-2 450
LVT-3 2,962
LVT-4 8,348
LVT(A)-4 1,890
LVT(A)-5 269
Totals 18,616