I've been putting Agatha Christie's novels into order, and for fun, some of them were published under multiple names.
For those of you struggling with Poirot in particular, here is the order:
1 DB051162
2 DB093049
3 DB010641
4 DB021373
5 DB011573
6 DB012344
7 DB054003 (compilation of 7, 8, 11, 13, 15--I only added the ones that didn't have standalones, which are 7, 11, and 13)
8 DB039507
9 DB011655
10 DB100864
11 DB054003
12 DB040597
13 DB054003
14 DB013992
15 DB012724
16 DB077615 (this is a collection of 50 short stories and novellas which happens to include #16--may be frustrating for some patrons)
17 DB081622
18 DB044355
19 DB015089
20 DB100861
21 DB048877
22 DB061220
23 DB100860
24 DB100862
25 DB100913
26 DB100863
27 DB022919
28 DB064438
29 DB017942
30 DB017068
31 DB012694
32 DB097649
33 DB048935
34 DB089927
35 DB079909
36 DB086046
37 DB092593
38 DB105196
Miss Marple:
1 DB064438 (part of compilation with Poirot and others)
2 DB015312
3 DB012151
4 DB033786
5 DB012612
6 DB027878
7 DB056994 (part of a compilation, I only cataloged for Book 7)
8 DB021400
9 DB044500
10 DB010039
11 DB040774
12 DB009960
Yeah, those Agatha Christie series get messy with those NLS compilations. I'm hoping our library can acquire standalone versions of those series titles just to straighten things out.