WCP1356

[1]

DAVIDSON OBSERVATORY,

SAN FRANCISCO, CAL.

LATITUDE 37˚ 47' 24".75 N.

LONGITUTE 122˚ 25' 40".5 W.

ELEVATION 378 FEET.

June 2 / 87

D^r Alfred R. Wallace

My Dear Sir,

In answer to your note of the 30^th ult, concerning map of the region around Lake Tahoe and the Yosemite I send you by mail today 1 map of Tahoe &c. and 3 maps of Yosemite

As these are the only copies that I have or that [2] can be had in the city, (after many inquiries) I beg that when you have gotten through with them you will be so kind as to return them to my address here.

I hope you will have a good time around the Lake and in the mountains.

The trip grail in daylight from Summit station down to Verdi (or Reno) on a freight train with passenger caboose attached is worth making. In the regular train it is done by night &c &c.

[3] One of the most interesting drives is above the R. R. station at "Summit" and go by map far down the old Emigrant Road to Donner Lake & thence to Truckee R. R.¹ But as it is some years since I made it I do not know what the facilities are for getting conveyance at Summit.

Yours very truly | George Davidson² [signature]

address:

Prof. George Davidson

U. S. Coast & Geodetic Survey

San Francisco Cal.