Richardson Silk Co. — Richardson’s mercerized cotton thread top and bottom;
Richardsons Sew with Silk top and bottom; and Richardson Silk Co. top [ bottom nearly
identical]. Est. 1930s-50s.

Belding Corticelli Richardson — tops of purple label silk and green
label cotton; Sew with Silk top and bottom; and mercerized cotton top
and bottom. Est. 1950s -60s.

Belding and Corticelli brands — Belding Hemingway top; Belding waxed thread
top; Belding Poly-Bond [late 1960s-early 70s] top; two Corticelli tops.  Est.
1930s-50s.

Belding Corticelli Co.–
silk top; silk top and bottom; cotton top and bottom; polybond top and bottom with
different prices. Est. 1950s-early 70s.

Belding Corticelli Co. — silk and cotton tops with bottoms showing varying
prices; large-size belwaxed top and bottom, nicely waxed-finish spool. Est 1950s-early
70s.

Early Corticelli thread. Best Twist top and Machine Twist top — notice kitten
emblem in red and blue printing; both have same bottom label which reads "Established
in 1838, Manufactured at Florence Mass."

The
Corticelli kitten logo or emblem is described in this appealing 1984 book The Cat Made
Me Buy It.  Here are three versions of the kitten logo [enlarged] which look more
like bearded lions.
    – Book courtesy Shirley McElderry

Lily top and bottom, Lily bottom with metal hole reinforcement, Lily dressmaker
size top and two Belding Lily dressmaker size foam tops. Est.
1950s-60s.

Corticelli Thread —  midget spools of darning silk. Even though spools are
same size, notice the different size holes. Date unknown.
   – Courtesy Sharon Stark

Belding Corticelli mercerized cotton dressmaker spool; size A is size 50. Est. 1950s-early 70s. – Courtesy Marge Thomas

Contents of a Corticelli gift sewing travel pack include darning and sewing cotton wound on miniature black spools. Est. late 1960s-early 70s.
– Courtesy Val Magnuson

Pilgrim by Belding Heminway — pure dye silk; top and bottom labels; est. 1920s-30s.
– Courtesy Sheila Ramsey