Son of Doctor Esker's Notebook (The Sequel)

Hint
Small #1	341	646	434	394	359	209	420	408	155	316
Small #2	337	662	438	408	346	171	411	422	168	297
Small #3	300	641	403	417	359	159	397	410	150	283
Medium #1	331	670	403	411	298	145	396	443	150	299
Medium #2	312	646	345	394	297	145	360	441	141	307
Medium #3	318	659	310	390	240	135	343	444	142	275
Large #1	273	725	322	427	210	159	330	456	162	318
Large #2	255	688	282	430	250	154	289	432	150	299
Large #3	239	573	302	328	222	211	319	440	162	358

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

Hint
Small #1	133	197	176	71	164	113	80	107	144	112
Small #2	122	189	169	64	172	107	79	103	145	111
Small #3	117	194	174	64	166	96	77	109	135	116
Medium #1	119	185	188	78	174	100	84	111	162	118
Medium #2	119	175	196	75	168	96	93	106	156	103
Medium #3	122	175	194	77	165	86	80	105	135	106
Large #1	122	182	214	83	173	79	78	108	112	127
Large #2	85	162	175	82	189	70	88	101	105	131
Large #3	82	165	166	100	159	73	77	73	74	125

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

Hint
Small #1	24	24	33	61	51	56	35	65	83	27
Small #2	24	24	31	56	53	56	33	67	66	29
Small #3	21	23	30	56	49	68	30	63	73	30
Medium #1	22	21	33	63	50	64	32	62	75	31
Medium #2	18	17	30	62	43	51	29	59	78	23
Medium #3	15	17	31	49	40	48	32	56	83	27
Large #1	15	15	33	45	38	56	28	56	65	29
Large #2	13	16	32	35	28	44	24	49	46	27
Large #3	20	21	30	40	28	46	31	48	43	39

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.