Handsaw with blade storage and auxiliary blade

A handsaw frame, comprising:

• an elongate substantially rigid back member, a handle portion, and a swing arm pivotally connected to said back member distal from said handle portion so as to be rotatable between an extended position generally transverse to said back member and a storage position generally parallel and aligned with said back member;
• said handle portion comprising at least a first blade mount;
• said swing arm comprising at least a second blade mount;
• said back member comprising at least a third blade mount disposed proximate to said swing arm;
• each of said first, second, and third blade mounts being constructed to engage one end of a removably mounted saw blade of a first type;
• wherein said first, second, and third blade mounts are disposed with said swing arm in said extended position such that a first distance between said first and second blade mounts substantially equals a second distance between said first and third blade mounts;
• said back member further comprising an auxiliary blade mount mechanism adapted to removably mount an auxiliary saw blade of a second type extending operatively forward from said frame;
• and
• said back member further comprising a blade storage cavity adapted to store at least one of said removably mounted saw blades.