I found this info on one of my lists today. I thought it was useful information for working with the IGI (International Genealogical Index). Thought I would pass it on in case anyone else is interested. Hi Listers, > > Since I have had some inquiries regarding batch numbers, > etc, on the IGI, I thought this info might be of use to more > than one of you. I am taking this from a publication which > should be available at your nearest LDS FHC (no charge) > entitled "Finding an IGI Source." Excerpts: > > Batch numbers beginning with A, L, M17, M18,T0, T90, 69409- > indicate LDS Temple records and have limited access. > > Batch numbers beginning with C, E, J, K, M (except M17 and > M18), P, T5, 725, 744, 745, 754- indicate extracted birth, > christening or marriage record. > > " ...Films can be ordered by family history centers.... > Names are usually listed chronologically by event > date...There is no submitter. You may request a photocopy. > > E- Batches: Replace the "E" with an " M" and find the "M-" > batch number in the IGI Batch Number Index. > > T-5-Batches: Just above the IGI entry with a "T-5-" batch > number, you will find a nearly identical IGI entry with a > different batch number. Use that batch number to find the > source. > > 725-, 745-, and 754- Batches: These batches are extracted > indexes, usually with no more information. Names may be > listed alphabetically ...Surnames A - O are on film 543896. > P - Z are on film 543897." > > Batch numbers beginning with F, T96, T998, T9990, and all > digit numbers such as 8434961 [except beginning with 725-, > 744-, 745-, 754- as above] are forms submitted to the > Ancestral File by individuals. They may be a Family Group > Record, an Individual Entry or Marriage Entry. The > microfilms can be ordered and photocopies can be made. > Submitters' names and addresses may be outdated. > > F- Batches: Check the forms to understand the data. Some > information is estimated or added and may be different from > what you expect. > > T96- Batches: This is a correction to an existing record. > > I have found this publication very helpful in locating > reliable sources Of course, it has much more information > than I have included here. > Christina's World http://pw1.netcom.com/~ninah/ninah.htm