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Satirical comment on a review by Paul Weiss of the manuscript of 'Analysis of Development'., Typewritten carbon copy on yellow paper., Correspondence

Handwritten, a letter in German, 6 pages, Correspondance

Handwritten, a letter in German, 2 pages, Correspondance

4 black and white photographs of chick limb bud development. Stage 29. The limb buds have been removed from the embryo and are placed on a black background. The image on the top left is of only a wing bud at stage 29., At least one of these photos were used for the images in Hamburger, Viktor, and Howard L. Hamilton. "A series of normal stages in the development of the chick embryo." Journal of morphology 88, no. 1 (1951): 49-92. However, in the final publication, the photos of limb buds were placed beneath photos of the whole chick embryo at their given stage., Photographs

3 micrographs and 2 hand drawn images of chick somite development. Top left shows a piece of a transverse section of a stage 10 chick embryo. Middle top and bottom shows a close up of the somite (transverse section). Right top and bottom are hand drawn images of cells in the somites., Illustrations

7 micrographs showing the results of chick limb transplantation, The micrographs have been labelled with numbers and hand drawn notes indicating different bones (fe=femur, t=tibia, f=fibula, c=clavicle, s=scapula). The images have been pasted onto a sheet of cardstock, which has various pencil markings., Photographs

13 black and white photographs of different stages of chick limb bud development. The limb buds have been removed from the embryo and are placed on a black background. Stages 23 through 35 are pictured. Wing buds are pictured on top, leg buds on the bottom., These photos were used for the images in Hamburger, Viktor, and Howard L. Hamilton. "A series of normal stages in the development of the chick embryo." Journal of morphology 88, no. 1 (1951): 49-92. However, in the final publication, the photos of limb buds were placed beneath photos of the whole chick embryo at their given stage., Photographs