This is a COPY of the ORIGINAL.

Singer Service Manual 14U344B/ 354B M/C (14U342B/352B M/C) (Four/Three Thread) - 31 pages

Our manuals are printed copies, sized 8 1/2 × 11 inches and bound with a clear plastic front cover, a plastic comb spine so that they can lie flat when opened, and a cardstock back cover. 
Most are enlarged from the originals.