Son of Doctor Esker's Notebook (The Sequel)

Hint
Small #1	341	645	433	393	359	209	419	407	155	316
Small #2	337	661	437	407	346	171	410	421	168	297
Small #3	300	640	402	415	359	159	396	409	150	283
Medium #1	331	668	401	410	298	145	395	443	150	299
Medium #2	312	645	345	393	297	145	359	441	141	307
Medium #3	318	658	310	389	240	135	342	444	142	275
Large #1	273	724	322	425	210	159	329	456	162	318
Large #2	255	687	282	428	250	154	289	432	150	299
Large #3	239	571	302	327	222	211	319	440	162	358

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

Hint
Small #1	131	195	173	71	164	112	80	105	143	112
Small #2	120	187	166	64	172	106	79	102	144	111
Small #3	115	192	171	64	166	95	77	108	134	116
Medium #1	117	183	185	78	174	99	84	110	161	118
Medium #2	116	173	193	75	168	95	93	104	154	103
Medium #3	119	173	191	77	165	85	80	104	135	106
Large #1	120	180	213	83	173	79	78	106	111	127
Large #2	82	160	174	82	189	70	88	100	103	131
Large #3	80	163	165	100	159	73	77	73	73	125

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

Hint
Small #1	24	24	33	61	51	56	35	65	79	27
Small #2	24	24	31	56	53	56	33	67	64	29
Small #3	21	23	30	56	49	68	30	63	71	30
Medium #1	22	21	33	63	50	64	32	62	73	31
Medium #2	18	17	30	62	43	51	29	59	75	23
Medium #3	15	17	31	49	40	48	32	56	80	27
Large #1	15	15	33	45	38	56	28	56	63	29
Large #2	13	16	32	35	28	44	24	49	44	27
Large #3	20	21	30	40	28	46	31	48	42	38

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.