All three are done my same photographer 

Carl Helmquist 212 and 214 East Second Street Jamestown N.Y.

Cards are in very good condition 

Pictures do have some spots and the young lady has what seems to be a scratch running down the picture through her forehead. 

The young gentelman card has a design on the back done by the photographer.

All are unnamed 

3 Antique Cabinet Card Photos 1880 - 1900