|**The Sentinels Chronology**|||||

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|Marvel Age Introductions by On-Sale Date|||||
|1965|SEP 2|XMN014|The X-Men|[XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] [Sentinels] [Bolivar Trask]|
|1965|OCT 5|XMN015|The X-Men|[XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] [Master Mold]|
|1965|NOV 4|XMN016|The X-Men|[XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] []|
|1969|APR 10|XMN057A|The X-Men|[XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl] [Polaris][Havok] [Larry Trask][The Sentinels]|
|1969|APR 10|XMN057B|The X-Men|[Origins of the X-Men • Marvel Girl]|
|1969|MAY 13|XMN058|The X-Men|[XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl] [Polaris][Havok][Banshee][The Sentinels]|
|1969|JUN 17|XMN059|The X-Men|[XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl] [Polaris][Havok][Banshee][Quicksilver • Scarlet Witch ][The Sentinels]|