Son of Doctor Esker's Notebook (The Sequel)

Hint
Small #1	323	612	414	375	339	203	401	391	149	302
Small #2	321	631	417	389	327	165	393	405	158	285
Small #3	285	614	385	396	340	154	382	394	143	272
Medium #1	316	642	382	391	284	142	384	428	143	288
Medium #2	297	619	331	375	283	143	349	426	134	296
Medium #3	303	635	295	373	230	134	331	430	135	266
Large #1	260	694	306	409	202	155	319	438	153	305
Large #2	242	658	270	410	240	150	281	416	144	289
Large #3	224	548	288	315	213	204	309	425	155	346

Return of Doctor Esker's Notebook (The Other Sequel)

Hint
Small #1	110	168	150	66	142	99	70	95	131	99
Small #2	103	161	145	60	146	94	70	91	128	100
Small #3	98	165	147	60	141	82	69	95	121	106
Medium #1	100	160	162	73	149	86	75	96	147	105
Medium #2	100	152	169	71	142	85	84	90	140	91
Medium #3	102	154	168	73	139	76	72	91	123	94
Large #1	101	160	193	78	153	73	72	94	99	113
Large #2	64	142	160	76	169	63	82	89	92	120
Large #3	63	148	152	93	142	65	70	64	66	117

Doctor Esker's Notebook IV: The Moroccan Affair
(The Other Other Sequel)

Hint
Small #1	18	13	16	38	31	40	24	43	54	13
Small #2	18	12	15	33	32	40	23	40	43	12
Small #3	16	12	15	36	30	49	21	39	47	15
Medium #1	15	11	15	39	31	45	24	40	48	16
Medium #2	13	9	15	39	28	33	21	38	50	10
Medium #3	10	9	17	31	26	31	23	36	52	13
Large #1	9	8	18	29	22	36	18	37	39	15
Large #2	7	9	17	24	17	27	16	35	27	15
Large #3	12	11	14	27	14	28	19	32	23	26

The hints are sorted by how much help they give you.
The last Large Hint on each page comes very close to just giving you the solution.