The Supreme Court of Iowa has explained that "under the common law, there are four categories of found property: (1) abandoned property, (2) lost property, (3) mislaid property, and (4) treasure trove." Benjamin v. Linder Aviation, Inc., 534 N.W.2d 400 (Iowa 1995); see also Jackson v. Steinberg, 186 Or. 129, 200 P.2d 376 (1948). "The rights of a finder of property depend on how the found property is classified."
" 8 Ark L Rev at 504. Although we have recognized the existence of gratuitous bailments, see Jackson v. Steinberg, 186 Or. 129, 138, 200 P.2d 376 (1949), we have not passed on the duty of care required of a gratuitous bailee. No cases have been cited to us and we can find none.