Son of Doctor Esker's Notebook (The Sequel)

Hint
Small #1	330	621	422	381	347	204	407	396	150	307
Small #2	328	638	424	395	334	165	399	410	162	289
Small #3	292	621	393	402	348	154	386	399	144	276
Medium #1	323	649	390	396	289	142	388	433	145	293
Medium #2	303	626	337	378	288	143	353	431	136	300
Medium #3	310	641	303	376	234	134	335	435	137	269
Large #1	266	704	316	414	204	155	322	444	157	310
Large #2	248	666	277	416	244	150	283	422	147	292
Large #3	233	552	297	319	218	205	313	431	160	351

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

Hint
Small #1	118	184	161	66	148	102	76	99	135	107
Small #2	111	176	154	60	153	97	75	95	134	106
Small #3	106	182	158	60	150	85	73	99	126	111
Medium #1	108	173	172	73	155	89	80	100	152	111
Medium #2	107	163	180	71	149	88	88	94	146	96
Medium #3	110	165	178	73	146	78	77	95	128	99
Large #1	108	172	201	78	156	75	76	97	104	119
Large #2	70	153	166	77	171	65	85	92	97	126
Large #3	68	157	158	94	144	70	73	65	68	121

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

Hint
Small #1	21	19	25	51	43	48	31	54	68	20
Small #2	21	19	23	47	43	48	30	54	55	19
Small #3	19	18	22	48	41	59	26	52	61	22
Medium #1	20	17	23	52	44	54	29	51	60	23
Medium #2	16	13	23	53	39	42	26	49	62	16
Medium #3	13	13	24	42	36	39	28	45	66	18
Large #1	13	12	24	39	34	48	23	45	50	20
Large #2	10	12	25	31	25	37	20	41	33	20
Large #3	18	15	21	35	25	39	25	40	31	31

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.