Son of Doctor Esker's Notebook (The Sequel)

Hint
Small #1	335	640	431	388	353	209	415	404	154	314
Small #2	333	656	434	403	340	171	406	418	167	295
Small #3	297	636	401	410	355	159	392	406	149	282
Medium #1	328	664	398	403	295	145	392	440	149	298
Medium #2	309	641	343	385	294	145	356	438	140	306
Medium #3	315	655	308	382	238	135	339	442	141	274
Large #1	271	721	320	420	209	159	326	454	161	316
Large #2	253	684	281	424	249	154	286	430	150	297
Large #3	238	569	301	326	222	210	316	438	162	356

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

Hint
Small #1	127	187	170	68	156	110	79	104	140	111
Small #2	117	179	163	62	164	104	78	101	140	110
Small #3	112	185	168	62	158	93	76	107	131	115
Medium #1	114	178	182	75	166	98	83	107	158	117
Medium #2	113	168	190	73	161	94	91	102	151	102
Medium #3	116	170	188	75	158	84	78	102	133	105
Large #1	117	178	209	80	169	78	77	104	109	126
Large #2	79	158	172	79	184	69	86	97	101	131
Large #3	76	161	163	97	155	73	74	70	72	125

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

Hint
Small #1	23	21	28	54	47	51	33	59	71	24
Small #2	23	21	26	50	49	51	32	59	59	24
Small #3	20	20	25	50	46	63	29	57	66	27
Medium #1	21	18	26	57	47	59	31	56	65	28
Medium #2	17	14	26	57	41	47	28	53	67	21
Medium #3	14	14	27	45	38	43	31	48	72	23
Large #1	14	12	27	42	36	51	27	48	53	25
Large #2	12	13	28	32	26	40	23	43	35	24
Large #3	19	19	24	36	26	42	30	43	34	34

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.