Marshall, 1947 Melopiza May 2 SF Bay airplane Trip 57. Mouth Petaluma Cr. E RR bridge 1/2 sq. mi Pure Baccharis. Petaluma Cr - side branch goes almost to Novato - carrying Salicornia - consid. gap 1 mi+ all plants Petaluma marsh very extensive looks like Baccharis, Scirpus Grindelia & Salicornia Mouth San Antonio Cr. 3-4 mi S Petaluma [gap] bunch willows then gap due to grazing} of 400-500 yds. Little cr. SE Petaluma Refanned in good contact the very narrow 39 or 40 no Salicornia Stream very birds too small] Scirpus small.. 100 yd. break at Black Point. Mouth Novato Cr. broad between pure Salicornia, Scirpus on bay edge. Sm break by a stone dyke NE Hamilton Field