A broker is entitled to a lien for his commissions on a note and mortgage or on the proceeds thereof left in his possession to negotiate a sale thereof. Peterson v. Hall, 61 Minn. 268, 63 N. W. 733; Carpenter v. Monsen, 92 Wis. 449, 65 N. W. 1027, 66 N. W. 692. Contra, State Bank v. Cullen (N. D. Sup. '09), 121 N. W. 85. Compare Secs. 285, 287.