201. Letter from Barbara McClintock to George W. Beadle

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202. Letter from George W. Beadle to Barbara McClintock

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203. Spontaneous Alterations in Chromosome Size and Form in Zea Mays

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204. Letter from Barbara McClintock to Almiro Blumenschein

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205. Letter from Barbara McClintock to Almiro Blumenschein

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206. Inter-American Maize Improvement Program of the Rockefeller Foundation

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207. Letter from Barbara McClintock to F. G. Brieger

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208. Security Investigation Application for the Brookhaven National Laboratory

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209. Letter from Barbara McClintock to William L. Brown

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210. Letter from Charles R. Burnham to Barbara McClintock

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211. Letter from Charles R. Burnham to Barbara McClintock

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212. Letter from Charles R. Burnham to Barbara McClintock

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213. Controlling Elements and the Gene

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214. Letter from Oliver E. Nelson, Jr. to Barbara McClintock

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215. Draft of letter from Barbara McClintock to Angel Kato

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216. Letter from Barbara McClintock to Angel Kato

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217. Letter from Joshua Lederberg to Barbara McClintock

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218. Letter from Barbara McClintock to Frank Press, National Academy of Sciences

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219. Corn geneticists in the Plant Breeding Department, Cornell University

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220. Al Hershey and Barbara McClintock

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221. Cold Spring Harbor

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222. Contact print of Barbara McClintock

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223. Barbara McClintock

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224. Barbara McClintock at Cold Spring Harbor

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225. Barbara McClintock with her niece, Mitz Bhavnani at the Wailing Wall, Jerusalem

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226. Barbara McClintock at Rosenstiel Awards

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227. Polaroid test photograph of McClintock at her desk

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228. Barbara McClintock with Marjorie and niece, Mitz Bhavnani(?)

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229. Corn specimen 77/6b [1]

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230. Corn specimen 77/5a [2]

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231. Corn specimen 77/6b [2]

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232. A: The Chromatid Type of Breakage-Fusion-Bridge Cycle and B: The Chromosome Type of Breakage-Fusion-Bridge Cycle: Same as A from Meiosis to Formation of Egg and Sperm Nuclei

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233. [Corn kernel specimens] (2)

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234. 1 C, non-variegated : 1 C, variegated

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235. [Corn kernel specimens] (1)

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236. Corn specimens (Milho Pontinha)

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237. Low state Ac loci

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238. [Unpublished index of corn specimens] (section 3, image 3)

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239. [Unpublished index of corn specimens] (section 2, image 6)

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240. [Unpublished index of corn specimens] (section 3, image 2)

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241. [Unpublished index of corn specimens] (section 3, image 1)

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242. [Unpublished index of corn specimens] (section 4, image 2)

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243. [Unpublished index of corn specimens] (section 3, image 11)

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244. [Unpublished index of corn specimens] (section 4, image 3)

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245. [Unpublished index of corn specimens] (section 4, image 1)

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246. [Unpublished index of corn specimens] (section 4, image 11)

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247. The Cytological Identification of the Chromosomes Associated with the 'R-golden' and 'B-liguleless' Linkage Groups in Zea Mays

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248. Barbara McClintock's Curriculum Vitae

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249. A Short Biographical Note: Barbara McClintock

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250. Barbara McClintock's Curriculum Vitae

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