Evidence, Records, and Research
Boundary evidence is classified as direct (monuments, corners, lines) or indirect (testimony, occupation, improvements), and as original (from the first survey) or collateral. The surveyor must gather and weigh evidence systematically: the record (deeds, plats, field notes, government township plats), physical evidence on the ground, and parol evidence such as testimony of long-time occupants. Alaska has particular research challenges: much of the state's cadastral record is federal, held by the Bureau of Land Management, and historical records include GLO field notes, master title plats, and the Alaska state land records. A candidate should know the difference between the record and the ground, and the rule that the best evidence is the original document rather than a copy. Traps: confusing a bearing tree with a witness corner; treating a copy of a field note as original evidence; and failing to distinguish a record that is merely descriptive from one that is controlling. The surveyor must also document the research trail - a chain of title, a record of monument searches, and field notes - because the quality of the evidence determines the weight it carries. When evidence conflicts, the surveyor must explain the resolution rather than silently choosing one source.
Rule of thumb: document every source you consulted and every monument you searched for, including those you did not find - the absence of a monument is itself evidence.
Worked example: a deed calls for a stone at a corner, but a search finds only a bearing tree. The tree is collateral evidence of the original corner; record the search, the tree, and any testimony, and do not substitute a calculated position without explaining why.