This free pattern originally published by Clark's O.N.T. in Floral Insertions and Floral Edgings, Book 263, in 1949.

Materials:
J. & P. Coats Tatting-Crochet, Size 70, Shaded Yellows (No. 19), Light Blue (No. 7) and Bright Nile Green (No. 26-B).
Large Flower . . . With Shaded Yellows, r of 5 ds, 3 p's sep by 10 ds, 5 ds, cl. (R of 5 ds, join to last p of preceding r, 10 ds, 2 p's sep by 10 ds, 5 ds, cl) 4 times, joining last r to first r. Tie and cut. Attach Light Blue to center of flower, (r of 5 ds, cl) 3 times. Join to center of flower. Tie and cut. Make necessary number of large flowers.
Small Flower . . . With Blue, r of 10 ds, join to p between r's of Large Flower, 10 ds, cl. R of 10 ds, p, 10 ds, cl. R of 10 ds, join to p between r's of next Large Flower, 10 ds, cl. R of 10 ds, p, 10 ds, cl. Tie and cut. Make necessary number of Small Flowers, joining each between Large Flowers as before, having 2 r's free on Large Flowers at top.
Heading . . . With Bright Nile Green, tie ball and shuttle threads together. R of 10 ds, join to p between 2 r's of First Large Flower (preceding the joining of Large and Small Flowers), 10 ds, cl. Rw, ch of 5 ds, 3 p's sep by 5 ds, 5 ds, join to p of r of Small Flower, * ch of 5 ds, join to last p of preceding ch, 5 ds, 2 p's sep by 5 ds. Rw, r of 10 ds, join to p between 2 r's of next Large Flower, 10 ds, cl. Rw, ch of 5 ds, 3 p's sep by 5 ds, 5 ds, join to next Small Flower. Repeat from * across. Tie and cut.
Insertion . . . Work exactly as for Edging.
Now work Heading along opposite long side as follows; With Bright Nile Green, r of 10 ds, join to p between r's at opposite side of first Large Flower, 10 ds, cl. Rw, ch of 5 ds, 3 p's sep by 5 ds, 5 ds, join to p of free r of Small Flower, * Ch of 5 ds, join to last p of preceding ch, 5 ds, 2 p's sep by 5 ds, 5 ds. Rw, r of 10 ds, join to p between r's of next Large Flower (following the joining of Small and Large Flowers), 10 ds, cl. Rw, ch of 5 ds, p, 5 ds. Rw, r of 10 ds, join to p between next 2 r's of same Large Flower, 10 ds, cl. Rw, ch of 5 ds, 3 p's sep by 5 ds, 5 ds, join to next Small Flower. Repeat from * across. Tie and cut.
Other great patterns from Floral Insertions and Floral Edgings, Book 263:
Apple Blossom Edging
Aster Edging
Buttercup Edging
Cosmos Edging
Forget-Me-Not Edging
Pansy Edging
Rose Edging
Blue Pillow Case Posies Edging
Shaded Blue Pillow Case Posies Edging
Pink Pillow Case Posies Edging
Shaded Pink Pillow Case Posies Edging
Purple Pillow Case Posies Edging
Shaded Purple Pillow Case Posies Edging
Yellow & Blue Pillow Case Posies Edging
Blouse Insertion
Canterbury Bell Curtain Insertion
Collar & Cuff Insertion
Daisy Pillow Case & Sheet Insertion
Narcissus Vanity Set Insertion
Rose Luncheon Mat Insertion